Health Library

T and B Lymphocyte and Natural Killer Cell Profile
This test finds and counts three types of white blood cells in your blood. White blood cells help your body fight off infections and illness.

T3 test
This test measures the level of triiodothyronine (T3) in your blood. T3 is a type of hormone made by your thyroid gland.

Tartrate-Resistant Acid Phosphatase
This test looks for a substance that can appear in your blood if you have hairy cell leukemia.

Tartrate-resistant acid phosphatase 5b
This test looks for a substance that can appear in your blood if you have hairy cell leukemia.

Tay-Sachs carrier screening
This test looks for specific genetic changes in a sample of your blood. These genetic mutations cause most cases of Tay-Sachs disease.

Tay-Sachs Disease
This test looks for specific genetic changes in a sample of your blood. These genetic mutations cause most cases of Tay-Sachs disease.

Tay-Sachs DNA analysis
This test looks for specific genetic changes in a sample of your blood. These genetic mutations cause most cases of Tay-Sachs disease.

Tay-Sachs prenatal testing
This test looks for specific genetic changes in a sample of your blood. These genetic mutations cause most cases of Tay-Sachs disease.

TB culture and sensitivity
This test is done to find out if you have tuberculosis. Your doctor might order this test if you have a lung infection or symptoms of TB.

TEE
A transesophageal echocardiogram uses sound wave (ultrasound) technology to examine heart function. By inserting a probe with a transducer down the esophagus rather than placing the transducer on the chest, physicians get a clearer image of the heart because the sound waves do not have to pass through skin, muscle, or bone tissue.

Teen Suicide
Suicide is the third leading cause of death in 15- to 24-year-olds. The strongest risk factors for attempted suicide in youth are depression, substance abuse, and aggressive or disruptive behaviors.

Teeth, Bleaching
Detailed information on teeth bleaching, including potential risks and side effects

Teeth, Fillings
Detailed information on tooth fillings, including the different types such as dental amalgams, composite resins, porcelain veneers, crowns, and cast gold restorations

Teeth, Whitening
Detailed information on teeth bleaching, including potential risks and side effects

Teething
A baby's first tooth usually appears between 5 and 7 months of age. Often, the two middle bottom teeth come through the gums first, followed by the middle four upper teeth.

Tegretol (Blood)
This test measures the amount of the drug carbamazepine in your blood. Carbamazepine is the generic name of a drug used to treat epilepsy, mania, bipolar disorder, and pain.

Temper Tantrums
These fits of rage—the stomping, screaming, and falling on the floor—are a normal part of childhood development. Temper tantrums often occur only with a parent. They are a way for the child to communicate his or her feelings.

Temporal Lift
A forehead lift can correct sagging brows or deep furrows between the eyes. It is often done in conjunction with a facelift, in order to create a smoother facial appearance overall.

Temporary Brachytherapy
Brachytherapy is radiation treatment that is given inside the patient, as close to the cancer as possible. The radiation is delivered to the body site with radioactive isotopes inside wires, seeds, or rods. These devices are called implants.

Temporary Colostomy
A colostomy is an operation that creates an opening for the colon, or large intestine, through the abdomen. A colostomy may be temporary or permanent. It is usually performed after bowel surgery or injury.

Tendonitis
Tendonitis is an inflammation of a tendon—the tough cord of tissue that connects muscles to bones. Tendonitis can affect any tendon, but is most commonly seen in the wrist and fingers.

Tennis Elbow
Tennis elbow is a repetitive stress injury of the elbow that occurs when the muscles and tendons in the elbow area are torn or damaged.

Tension Headaches
Tension headaches are typically a steady ache, rather than a throbbing one, and affect both sides of the head. Stress or muscle tension is often the cause.

Test for concentration of pancreatic enzymes
This test looks for two enzymes from the pancreas, to find out how well the pancreas is working. This test is used for people with cystic fibrosis.

Test for hemophilia C
This test measures the amount of factor XI in your blood. Factor XI is a substance that plays an important role in blood clotting.

Test for measles-specific IgM antibody
This test finds out whether you have been exposed to the virus that causes measles, an extremely contagious disease.

Test, 24-Hour Urine
Twenty-four hour urine collection is performed by collecting a person's urine in a special container over a 24-hour period. The results of a 24- hour urine collection may provide information to help your physician make or confirm a diagnosis.

Test, Pregnancy
The signs of pregnancy vary from woman to woman, but the most obvious sign usually is a missed period.

Test, Tilt Table
This is a diagnostic procedure often used to assess syncope (fainting) by creating changes in posture from lying to standing.

Testicular Cancer
Testicular cancer is one of the most curable forms of cancer, but the symptoms may resemble other conditions or medical problems.

Testicular Torsion
Detailed information on testicular torsion, including causes, symptoms, diagnosis, and treatment

Testing for "trich"
This test looks for a parasite that causes the sexually transmitted disease trichomoniasis. It can cause complications during pregnancy.

Testosterone, total
This test measures the level of testosterone in your blood. Both men and women produce this hormone.

Tests Performed Before Surgery
Many surgeons order routine laboratory tests before admission to the hospital, or even before certain outpatient procedures, to identify potential problems that might complicate surgery if not detected and treated early.

Tetanus
Detailed information on tetanus, including symptoms, diagnosis, treatment, and prevention

Tetanus Antibody
This test looks for tetanus antibody in your blood. If you have been vaccinated for tetanus in the past, this test should show that you have enough antibodies against the disease.

Tetanus in Children
Tetanus is an acute, sometimes fatal, disease of the central nervous system, caused by the toxin of the tetanus bacterium, which usually enters the body through an open wound.

Tetralogy of Fallot
Tetralogy of Fallot is a complex condition of several congenital heart defects.

Tg Abs
This test measures the amount of thyroid antibodies in your blood. The test can help find out whether you have a problem with your thyroid.

Thai Message
Detailed information on massage therapy as a form of alternative therapy

Thalassemias
Detailed information on thalassemias, including alpha thalassemia, beta thalassemia (Cooley's anemia)

Thallium Scan, Resting
A resting myocardial perfusion scan in a procedure in which nuclear radiology is used to assess blood flow to the heart muscle and determine what areas have decreases blood flow.

The Adrenal Glands
Detailed information on the adrenal gland, its anatomy and function

The Biliary System: Anatomy and Functions
Detailed anatomical description of the biliary system, including a full-color labeled illustration

The Biopsy Report
Detailed information on biopsy and the biopsy report

The Day of Surgery/Getting Ready For Surgery/The Operating Room
Detailed information on the day of surgery and what to expect in the operating room

The Digestive System: An Overview
Detailed information on how the digestive system works, including a full-color, labeled illustration of the digestive system

The Growing Child: 1 to 3 Months
At this stage of growth, your baby will gain 1-1/2 to 2 pounds in weight and more than an inch in height each month.

The Growing Child: 10 to 12 Months
Your child can now says da-da and ma-ma, and possibly two other words, as well. He or she can also make a simple gesture such as shaking the head.

The Growing Child: 1-Year-Olds
Your child is a toddler now and very active! He or she can climb stairs while holding on and play with push and pull toys.

The Growing Child: 2-Year-Olds
Speech at this age is becoming clearer. Your child has a vocabulary of 200 to 300 words and can tell his or her age and name.

The Growing Child: 3-Year-Olds
Most 3-year-olds have lost the rounded tummy of a toddler. Your child can use a spoon well and can wash and dry his or her hands.

The Growing Child: 4 to 6 Months
This age is very social, and babies begin moving in much more purposeful ways.

The Growing Child: 7 to 9 Months
A baby of this age rolls over easily from front to back and back to front, and bounces when supported to stand.

The Growing Child: Adolescent (13 to 18 Years)
Adolescence is a time for growth spurts and puberty changes. Sexual maturation may occur gradually or several signs may become visible at the same time.

The Growing Child: Newborn
In the first month of life, babies usually catch up and surpass their birthweight, then steadily continue to gain weight.

The Growing Child: Preschool (4 to 5 Years)
Children at this age begin to understand concepts and can compare abstract ideas.

The Growing Child: School-Age (6 to 12 Years)
Although friendships become more important at this age, children are still fond of their parents and like being part of a family.

The Immune System
The immune system keeps infectious microorganisms, such as bacteria, viruses, and fungi, out of the body, and destroys any infectious microorganisms that do invade.

The Liver: Anatomy and Functions
Detailed anatomical description of human liver, including simple definitions and labeled, full-color illustrations

The Menstrual Cycle: An Overview
A woman is generally most fertile (able to become pregnant) a few days before, during, and after ovulation.

The Orthopedic Treatment Team
Members of your treatment team may include an orthopedic surgeon, a rheumatologist, and a physical therapist.

The Pancreas
Detailed anatomical description of human pancreas, including simple definitions and labeled, full-color illustrations

The Pancreas: Anatomy and Functions
Detailed anatomical description of human pancreas, including simple definitions and labeled, full-color illustrations

The Parathyroid Glands
Detailed information on parathyroid glands, including anatomy and function

The Pathologist
Detailed information on pathology and the pathologist

The Pathology Report
Detailed information on pathology and the pathology report

The Pediatrician
You take your kids to the pediatrician for tummy aches and fevers, but a pediatrician does a lot more than care for sick children. This doc is responsible for your child’s physical, mental, and emotional well-being—in sickness and in health.

The Pituitary Gland
Detailed information on the anatomy and function of the pituitary gland

The Pregnant Mother
Detailed information for the pregnant mother, including information on hormones during pregnancy, weight gain during pregnancy, nutrition during pregnancy, exercise during pregnancy, work and pregnancy, sex during pregnancy, and sleeping positions during

The Radiologist
Radiology has become highly specialized, as have most other medical and surgical specialties. The current trend is for radiologists to become specialized in a particular discipline, such as cardiology (the study and treatment of the heart) or neurology (the study and treatment of the brain and nervous system).

The Radiology Team
The radiology team is led by one or more radiologists. Radiologists are responsible for interpreting the results of exams, performing certain procedures, conferring and consulting with other physicians in other specialties, and ensuring the overall quality performance of the entire team.

The Second Trimester
During this trimester, the weight of your growing baby will multiply more than seven times—and you will start showing more.

The Surgical Setting
Detailed information on the surgical setting and the options that may be available to the patient, including outpatient surgery, inpatient surgery, ambulatory surgery, and specialty surgery centers

The Surgical Team
The surgical team is made up of a surgeon, an anesthesiologist, a certified registered nurse anesthetist, and an operating room nurse.

The Third Trimester
The third trimester marks the home stretch for your pregnancy. You may feel more uncomfortable now as you continue to gain weight. You also may have false labor contractions (called Braxton-Hicks contractions).

The Thyroid Gland
Detailed information on the thyroid gland, including anatomy and function

Theophylline
This test measures the level of the medication theophylline in your blood. Having too much of this drug in your body can be life-threatening.

Therapeutic digoxin monitoring
This test measures the amount of the heart drug digoxin in your blood. When you take digoxin, it’s important that the drug be at the right level for you to benefit from it.

Therapeutic Radiology (Radiation Oncology)
Detailed information on therapeutic radiology, including information on external beam therapy and brachytherapy

Thermal Injuries
Detailed information on thermal injuries in children

Third-Degree Burns
This type of burn destroys the top two layers of skin. Treatment for third-degree burns depends on the amount of body surface area affected.

Thoracentesis
Thoracentesis is a procedure in which a needle is inserted through the back of the chest wall to remove fluid or air from between the lungs and the interior chest wall.

Thoracic Aortic Aneurysm and Aortic Dissection
Detailed information on thoracic aortic aneurysms, including description of a thoracic aortic aneurysm, causes, symptoms, diagnosis, treatment, and full-color anatomical illustrations

Thoracic CT Scan
CT/CAT scans are more detailed than standard x-rays and are often used to assess the organs of the respiratory and cardiovascular systems,and esophagus, for injuries, abnormalities, or disease.

Thoracic X-ray
This procedure may be used to diagnose back or neck pain, fractures or broken bones, arthritis, degeneration of the disks, tumors, or other problems.

Thoracoscopic Lobectomy
A lobectomy is a surgical procedure that removes one of the lobes of the lungs.

Thoracoscopic Lung Biopsy
A lung biopsy is a procedure in which tissue samples are removed with a special needle to determine if cancer or other abnormal cells are present.

Thoracotomy
A lobectomy is a surgical procedure that removes one of the lobes of the lungs.

Three-day measles
This test measures the amount of rubella antibodies in your blood. If you're pregnant, it's especially important to know if you have immunity against this virus.

Throat culture
If your health care provider suspects that you have this type of pneumonia, he or she may do a swab test of your nose or throat.

Throat culture
This test looks for the bacteria that cause strep throat. This condition causes a severe sore throat and makes it painful to swallow.

Throat swab
This test looks for bacteria that cause strep throat and scarlet fever. Both of these illnesses are quite contagious.

Thrombin clotting time
Thrombin time is a measure of how long the blood's plasma, or the liquid portion of the blood, takes to form a clot.

Thrombin Time
Thrombin time is a measure of how long the blood's plasma, or the liquid portion of the blood, takes to form a clot.

Thrombocyte count
This test measures the number of platelet cells in your blood. It can give your doctor valuable information about how well your blood clots to stop bleeding, how well your bone marrow is working, and about diseases that affect your platelet count.

Thrombocythemia
Detailed information on thrombocythemia, including causes, symptoms, diagnosis, and treatment

Thrombocytopenia
Thrombocytopenia is a condition in which a baby has too few platelets—the blood cells needed for clotting.

Thrombosis
Detailed information on thrombosis, including causes, symptoms, diagnosis, and treatment

Thumb Sucking
Thumb sucking is normal in infants and young children. It shouldn't cause any permanent problems if your child stops by age 5.

Thyroglobulin antibody test
This test looks for antibodies made in response to a protein made by your thyroid. The test can help diagnose thyroid problems, including Hashimoto's thyroiditis.

Thyroglossal Duct Cyst
Detailed information on thyroglossal duct cyst, including cause, symptom, diagnosis, and treatment

Thyroid Antibody
This test measures the amount of thyroid antibodies in your blood. The test can help find out whether you have a problem with your thyroid.

Thyroid antibody test
This test looks for antibodies made in response to a protein made by your thyroid. The test can help diagnose thyroid problems, including Hashimoto's thyroiditis.

Thyroid Antithyroglobulin Antibody
This test looks for antibodies made in response to a protein made by your thyroid. The test can help diagnose thyroid problems, including Hashimoto's thyroiditis.

Thyroid Disorders in Women
Detailed information on thyroid disorders in women

Thyroid function test
This test measures the level of triiodothyronine (T3) in your blood. T3 is a type of hormone made by your thyroid gland.

Thyroid Function Tests
Detailed information on the most common types of thyroid function tests

Thyroid Stimulating Hormone
This test measures your level of TSH, a hormone made by your pituitary. You may need this test if you have symptoms of thyroid problems.

Thyroid Tumor Overview
Detailed information on thyroid tumors, including symptoms and treatment

Thyrotropin test
This test measures your level of TSH, a hormone made by your pituitary. You may need this test if you have symptoms of thyroid problems.

Thyroxine screen
This is a blood test to measure your level of the hormone thyroxine, or T4. This test can show your doctor whether your thyroid gland is overactive, a condition called hyperthyroidism, or underactive, a condition called hypothyroidism.

TIBC
This test measures the amount of the protein transferrin in your blood. Levels of tranferrin tell your doctor about the iron supply in your body.

TIBC
These tests measure the amount of iron in your blood and how well that iron moves through your body.

Tibial Torsion
Tibial torsion causes a child's feet to turn inward, or to have what is also known as a "pigeon-toed" appearance.

Tilt Table Evaluation
This is a diagnostic procedure often used to assess syncope (fainting) by creating changes in posture from lying to standing.

Tilt Table Procedure
This is a diagnostic procedure often used to assess syncope (fainting) by creating changes in posture from lying to standing.

Tilt Table Test
This is a diagnostic procedure often used to assess syncope (fainting) by creating changes in posture from lying to standing.

Time-Out
Detailed information on child discipline and time-out

Tinea Infections (Ringworm) in Children
Detailed information on the most common types of ringworm, including diagnosis and treatment

Tinea Versicolor
Detailed information on tinea versicolor, including symptoms, diagnosis, and treatment

Tinea Versicolor in Children
Detailed information on tinea versicolor, including symptoms, diagnosis, and treatment

Tinnitus
Tinnitus is the sound of ringing, roaring, buzzing, or clicking that occurs inside the head. The sounds may come and go, be continuous, occur in one or both ears, and vary in pitch.

Toddler Nutrition
Mealtime with a toddler can be challenging, because children at this age are striving for independence and control. It's best to provide structure and set limits.

Toddler Problems of the Teeth and Mouth
Detailed information on toddler problems of the teeth and mouth

Toilet-Training
Detailed information on toilet-training your child

Tooth Decay (Caries or Cavities)
Detailed information on tooth decay and preventing cavities

Tooth Decay (Caries or Cavities) in Children
Tooth decay first appears as white spots on the teeth. The cavity then turns a light brown color and progressively becomes darker.

Tooth Fillings
Detailed information on tooth fillings, including the different types such as dental amalgams, composite resins, porcelain veneers, crowns, and cast gold restorations

Tooth, Root Canal
Detailed information on a root canal procedure

Tooth, Sealants
Detailed information on dental sealants

Tooth, Wisdom Extraction
Because most mouths are too small for the four additional molars called wisdom teeth, these teeth usually must be extracted.

Toothache (Pulpitis)
Detailed information on toothache, including causes, symptoms, diagnosis, and treatment

Topic Index - Pregnancy and Childbirth
Detailed information on pregnancy and childbirth, including information on birth statistics, pregnancy planning, preconception care, prenatal care, pregnancy discomforts, pregnancy tests, pregnancy risks, pregnancy warning signs, labor and delivery, breas

TORCH Panel
The TORCH panel test is used to help diagnose infections that could harm the fetus during pregnancy.

TORCH screen
The TORCH panel test is used to help diagnose infections that could harm the fetus during pregnancy.

Torticollis (Wryneck)
Torticollis is a spasm of the neck muscles. It is usually caused by vigorous movement or injury—or by sleeping in an awkward position.

Total and Free Carnitine
This test measures the amount of a substance called carnitine in your blood. Carnitine makes it possible for your body to digest fatty acids.

Total and Free Insulin (Blood)
This test measures two types of insulin in your body: total and free. The test can help diagnose low blood sugar, or hypoglycemia.

Total Anomalous Pulmonary Venous Return
In this condition, the four pulmonary veins are connected somewhere besides the left atrium.

Total Bilirubin (Blood)
This test is used to find out how well your liver is working. A small amount of bilirubin in your blood is normal. Too much may be a sign of liver disease.

Total blood cholesterol
This test measures the amount of cholesterol in your blood to help determine your risk for heart disease.

Total calcium
This test measures the amount of calcium in your blood. It can be used to diagnose a variety of disorders, from kidney disease to parathyroid problems.

Total cholesterol
This group of tests measures the amount of cholesterol and triglycerides in your blood. This test looks at the ratio between total and HDL cholesterol levels.

Total Copper (Blood)
This test measures the amount of copper in your blood. Too little or too much copper can cause health problems.

Total copper serum test
This test measures the amount of copper in your blood. Too little or too much copper can cause health problems.

Total Disc Arthroplasty
Cervical disk replacement surgery involves removing a diseased cervical disk and replacing it with an artificial disk.

Total Hip Arthroplasty
Hip replacement surgery is a procedure in which a damaged hip joint is replaced with an artificial hip joint. It is most commonly recommended as a treatment for severe osteoarthritis or damage due to fracture.

Total Hip Replacement
Hip replacement surgery is a procedure in which a damaged hip joint is replaced with an artificial hip joint. It is most commonly recommended as a treatment for severe osteoarthritis or damage due to fracture.

Total homocysteine
This test measures levels of homocysteine in your blood. At high levels, it can damage the lining of arteries and encourage blood clotting.

Total iron-binding capacity
This test measures the amount of the protein transferrin in your blood. Levels of tranferrin tell your doctor about the iron supply in your body.

Total Knee Arthroplasty
Knee replacement surgery is a procedure in which the ends of the bones in the knee are capped with metal and plastic parts. It is most commonly used to treat severe osteoarthritis.

Total Knee Replacement
Knee replacement surgery is a procedure in which the ends of the bones in the knee are capped with metal and plastic parts. It is most commonly used to treat severe osteoarthritis.

Total Protein and A/G Ratio
This test measures the amount of protein in your blood. It can help your doctor find out if you have liver disease or nephrotic syndrome.

Total serum bilirubin
This test is used to find out how well your liver is working. A small amount of bilirubin in your blood is normal. Too much may be a sign of liver disease.

Total T4 concentration
This is a blood test to measure your level of the hormone thyroxine, or T4. This test can show your doctor whether your thyroid gland is overactive, a condition called hyperthyroidism, or underactive, a condition called hypothyroidism.

Total Testosterone
This test measures the level of testosterone in your blood. Both men and women produce this hormone.

Tourette's Disorder
A person with Tourette's disorder develops multiple repeated tics. The tics are abrupt, purposeless, and involuntary vocal sounds or muscular jerks.

Tox screen
A cocaine screen is a test done to find out whether you have used cocaine recently. The test can be done on your urine, saliva, blood, hair, or sweat.

Toxic Epidermal Necrolysis
Detailed information on toxic epidermal necrolysis, including symptoms and treatment

Toxic Epidermal Necrolysis in Children
Detailed information on toxic epidermal necrolysis, including symptoms and treatment

Toxic Megacolon
A toxic megacolon is a rare yet life-threatening complication of severe colon disease or infection. It is diagnosed when your colon has expanded by more than five to six centimeters.

Toxic urine screen
This is a urine test to screen for a class of drugs called benzodiazepines. These drugs are often informally called tranquilizers, sleeping pills, and muscle relaxants.

Toxicology screen
A cocaine screen is a test done to find out whether you have used cocaine recently. The test can be done on your urine, saliva, blood, hair, or sweat.

Toxicology urine screen
This test detects the presence of amphetamine in your urine. This drug can show up in your urine long after you've taken it.

Toxoplasma Gondii (Amniotic Fluid)
This test looks for a parasite that can infect an unborn child. A pregnant woman can pick up this parasite by eating undercooked meat, drinking contaminated water, or handling cat feces.

Toxoplasma Gondii Antibody
This test looks for antibodies against Toxoplasma gondii (T. gondii) infection in your blood.

Toxoplasmosis
Toxoplasmosis is not only harmful to moms-to-be, but also to their unborn babies. If you haven’t heard of toxoplasmosis, you’ll definitely want to brush up on this new word.

Toy Safety
Detailed information on toy safety and injury prevention in children

TPO Abs
This test measures the amount of thyroid antibodies in your blood. The test can help find out whether you have a problem with your thyroid.

Tracheoesophageal Fistula and Esophageal Atresia
Detailed information on tracheoesophageal fistula and esophageal atresia, including symptoms, diagnosis, and treatment

Transabdominal Ultrasound
Ultrasound, or sound wave technology, is used to examine the organs and structures in the female pelvis.

Transbronchial Lung Biopsy
A lung biopsy is a procedure in which tissue samples are removed with a special needle to determine if cancer or other abnormal cells are present.

Transesophageal Echocardiogram
A transesophageal echocardiogram uses sound wave (ultrasound) technology to examine heart function. By inserting a probe with a transducer down the esophagus rather than placing the transducer on the chest, physicians get a clearer image of the heart because the sound waves do not have to pass through skin, muscle, or bone tissue.

Transesophageal Echocardiography
A transesophageal echocardiogram uses sound wave (ultrasound) technology to examine heart function. By inserting a probe with a transducer down the esophagus rather than placing the transducer on the chest, physicians get a clearer image of the heart because the sound waves do not have to pass through skin, muscle, or bone tissue.

Transferrin
This test measures the amount of the protein transferrin in your blood. Levels of tranferrin tell your doctor about the iron supply in your body.

Transferrin saturation
This test measures the amount of the protein transferrin in your blood. Levels of tranferrin tell your doctor about the iron supply in your body.

Transient Tachypnea of the Newborn
Transient tachypnea of the newborn is a term for a mild respiratory problem of babies that begins after birth and lasts about three days.

Translocation Down Syndrome
Detailed information on translocation Down syndrome

Translocations
Detailed information on chromosome translocations, including reciprocal translation and Robertsonian translocation

Transplant, Hepatic
Detailed information on liver transplantation, including the reasons and preparation for the procedure, how the procedure is performed, after care, and an anatomical illustration of the liver

Transplant, Lung
In a lung transplant, one or both diseased lungs are removed and replaced with a healthy lung from another person.

Transplant, Renal
A kidney transplant is a surgical procedure performed to replace a diseased kidney with a healthy kidney from another person.

Transplantation, Bone Marrow
Detailed information on bone marrow transplant, including preparation, types of transplant, transplant team, and possible procedure-related complications or side effects

Transplantation, Hair
Detailed information on hair loss and hair replacement surgery

Transplantation, Heart
A heart transplant is a surgical procedure performed to remove the diseased heart from a patient and replace it with a healthy one from an organ donor.

Transplantation, Kidney
A kidney transplant is a surgical procedure performed to replace a diseased kidney with a healthy kidney from another person.

Transplantation, Liver
Detailed information on liver transplantation, including the reasons and preparation for the procedure, how the procedure is performed, after care, and an anatomical illustration of the liver

Transposition of the Great Arteries (TGA)
Because of abnormal development of the fetal heart, the large vessels that take blood away from the heart to the lungs, or to the body, are improperly connected.

Transrectal Prostate Biopsy
A prostate biopsy is a procedure in which tissue samples are removed with a special needle to determine if cancer or other abnormal cells are present.

Transsphenoidal Endoscopic Surgery
The pituitary gland is located at the bottom of your brain and above the inside of your nose. Endoscopic pituitary surgery is the most common surgery used to remove pituitary tumors.

Transthoracic Echocardiogram (TTE)
An echocardiogram is a procedure in which ultrasonic sound waves are used to assess the heart's function and structures.

Transthoracic Needle Lung Biopsy
A lung biopsy is a procedure in which tissue samples are removed with a special needle to determine if cancer or other abnormal cells are present.

Transthyretin Test
The prealbumin screen is a blood test to see whether you are getting enough protein in your diet.

Transurethral Resection of the Prostate
A transurethral resection of the prostate is a surgical procedure that uses a tiny instrument to remove portions of the prostate gland through the penis, requiring no external incision.

Transurethral Resection of the Prostate (TURP)
A transurethral resection of the prostate is a surgical procedure that uses a tiny instrument to remove portions of the prostate gland through the penis, requiring no external incision.

Transvaginal Ultrasound
Ultrasound, or sound wave technology, is used to examine the organs and structures in the female pelvis.

TRAP
This test looks for a substance that can appear in your blood if you have hairy cell leukemia.

Trauma
Detailed information on neurological trauma in children

Traveler's Checklist
Detailed checklist for travelers to ensure a safe and healthy trip

Traveler's First-Aid Kit
Detailed list of what a traveler's first-aid kit should include

Traveling With Children
Detailed information on traveling with children

Traveling with Diabetes
Detailed information on traveling with diabetes

Traveling With HIV
Detailed information on traveling with HIV

Traveling With Special Needs
Detailed information for travelers with special needs

Treating Aged or Sun-Damaged Skin
Detailed information on treating aged or sun-damaged skin

Treatment and Management of Diabetes
Detailed information on diabetes treatment and management

Treatment for Arthritis
Detailed information on the most common treatments used for arthritis

Treatment for Skin Cancer
Detailed information on the most common treatments for skin cancer, including surgery, immunotherapy, radiation therapy, electrochemotherapy, biological therapy, and photodynamic therapy

Treatment for Stroke
Although there is no cure for stroke, advanced medical and surgical treatments are now available, giving many stroke victims hope for optimal recovery.

Treatment of Obesity
Detailed information on obesity treatment, including obesity medical treatment, obesity surgical treatment, obesity gastric bypass (malabsorptive) surgery, and obesity gastric stapling (restrictive) surgery

Treatment Plans
For most orthopedic disorders and injuries, more than one form of treatment may be appropriate.

Treatment Protocols for Cancer: Overview
The conventional, primary methods of treating cancer are surgery, radiation therapy, chemotherapy, hormone therapy, and immunotherapy/biological therapy. Your doctor will determine which treatment or treatments are best for you.

Treatments for Bone Disorders
Detailed information on the most common treatments used for bone disorders, including radiation therapy, surgery, amputation, bone graft, osteotomy, and arthroplasty (total joint replacement)

Treatments for Breast Cancer
Detailed information on breast cancer treatment, including surgery, breast reconstruction, lymphedema, breast prosthesis, radiation therapy, chemotherapy, Tamoxifen, and Taxol

Treatments for Prostate Cancer
Detailed information on the most common treatment for prostate cancer

Trichomonas culture
This test looks for a parasite that causes the sexually transmitted disease trichomoniasis. It can cause complications during pregnancy.

Trichomonas Vaginalis (Discharge)
This test looks for a parasite that causes the sexually transmitted disease trichomoniasis. It can cause complications during pregnancy.

Trichomoniasis
This test looks for a parasite that causes the sexually transmitted disease trichomoniasis. It can cause complications during pregnancy.

Trichomoniasis in Teens
Most people who have a trichomoniasis infection don’t have symptoms. If symptoms occur, they may begin anywhere from a few days to months after infection.

Tricuspid Atresia (TA)
In tricuspid atresia, the tricuspid valve, normally located between the right atrium and the right ventricle, does not develop properly.

Tricuspid Valve Repair/Replacement Surgery
Heart valve repair or replacement surgery is a treatment option when the heart valves become damaged or diseased and do not function properly.

Tricyclic antidepressant (TCA) testing
This test is used to check a sample of blood or urine for tricyclic antidepressants. Although these drugs can be helpful in normal doses, taking too much can be fatal.

Tricyclic Antidepressant Screen
This test is used to check a sample of blood or urine for tricyclic antidepressants. Although these drugs can be helpful in normal doses, taking too much can be fatal.

Triglycerides
This test measures the amount of triglycerides in your blood. This test is part of a group of cholesterol and blood fat tests called a fasting lipoprotein panel, or lipid panel.

Triiodothyronine test
This test measures the level of triiodothyronine (T3) in your blood. T3 is a type of hormone made by your thyroid gland.

Trinucleotide Repeats: Fragile X Syndrome
Detailed information on trinucleotide repeats, including fragile X syndrome

Triple A Repair
Abdominal aortic aneurysm (AAA) repair is a procedure used to treat an aneurysm (abnormal enlargement) of the abdominal aorta, which may be performed surgically through an open incision or in a minimally-invasive procedure called endovascular aneurysm repair (EVAR).

Trisomy 18 and 13
Trisomy 18 and trisomy 13 are genetic disorders that present a combination of birth defects including severe mental retardation, as well as health problems involving nearly every organ system in the body.

Troponin
This test measures the amount of the protein troponin in your blood. It can tell your doctor whether you are having a heart attack.

Truncus Arteriosus
Truncus arteriosus occurs when the aorta and the pulmonary artery fail to separate completely during fetal development.

Trypsin (Blood)
This test measures levels of trypsin in your blood to see if you have pancreatitis.

Trypsin/Chymotrypsin (Stool)
This test looks for two enzymes from the pancreas, to find out how well the pancreas is working. This test is used for people with cystic fibrosis.

Trypsinogen
This test measures levels of trypsin in your blood to see if you have pancreatitis.

TSB
This test is used to find out how well your liver is working. A small amount of bilirubin in your blood is normal. Too much may be a sign of liver disease.

TSH
This test measures your level of TSH, a hormone made by your pituitary. You may need this test if you have symptoms of thyroid problems.

TSH-Rs Abs
This test measures the amount of thyroid antibodies in your blood. The test can help find out whether you have a problem with your thyroid.

TTE
An echocardiogram is a procedure in which ultrasonic sound waves are used to assess the heart's function and structures.

TTN
Transient tachypnea of the newborn is a term for a mild respiratory problem of babies that begins after birth and lasts about three days.

Tubal Ligation
Tubal ligation is surgical procedure you may choose if you are an adult woman and you do not want to get pregnant in the future. You may have heard tubal ligation referred to as "getting your tubes tied."

Tuberculosis (TB)
Detailed information on tuberculosis, including risks, symptoms, causes, diagnosis, and treatment

Tuberculosis (TB) in Children
Detailed information on tuberculosis, including risks, symptoms, causes, diagnosis, and treatment

Tummy Tuck
In a tummy tuck procedure, excess fat and skin are surgically removed from the middle and lower abdomen, and the muscles of the abdomen wall are tightened.

Turner Syndrome
Turner syndrome is a genetic disorder seen in girls that causes them to be shorter than others and to not mature sexually as they grow into adulthood.

TURP
A transurethral resection of the prostate is a surgical procedure that uses a tiny instrument to remove portions of the prostate gland through the penis, requiring no external incision.

TV
This test looks for a parasite that causes the sexually transmitted disease trichomoniasis. It can cause complications during pregnancy.

Two-hour postprandial blood sugar
This blood test checks for diabetes. It is done after you eat a meal, so your doctor can see how your body responds to the sugar and starch in the food.

Two-Hour Postprandial Glucose
This blood test checks for diabetes. It is done after you eat a meal, so your doctor can see how your body responds to the sugar and starch in the food.

Two-hour PPG
This blood test checks for diabetes. It is done after you eat a meal, so your doctor can see how your body responds to the sugar and starch in the food.

Tylenol drug level
The acetaminophen drug level is a blood test used to screen for the presence of the common pain reliever acetaminophen.

Types of Anesthesia and Your Anesthesiologist
During surgery, you will be given some form of anesthesia—medication administered for the relief of pain and sensation during surgery. The type and dosage of anesthesia is determined by the anesthesiologist.

Types of Chromosome Abnormalities
Detailed information on the different types of chromosome abnormality

Types of Complementary and Alternative Medicine
Detailed information on different forms of complementary and alternative therapy, including information on safety and risks

Types of Hand Conditions
Detailed information on the most common hand conditions, including carpal tunnel syndrome, congenital hand deformity, dupuytrens contracture, and rheumatoid arthritis

Types of Home Health and Hospice Care Providers
Home health and hospice care can be provided by many different types of organizations, agencies, companies, and individuals. Choosing the service that is right for your family requires some research.

Types of Home Health Care Services
The range of home health care services a patient can receive at home is limitless. Care can range from nursing care to specialized medical services such as laboratory work-ups.

Types of Hospice Care Services
The goal of hospice is to provide comfort and care, not "cure" the illness or disease. Types of hospice care services provided depend on the patient's needs and preferences.

Types of Muscular Dystrophy and Neuromuscular Diseases
Muscular dystrophy is a group of inherited diseases that are characterized by weakness and wasting away of muscle tissue, with or without the breakdown of nerve tissue.

Types of Skin Cancer
Detailed information on the most common types of skin cancer

Types of Skin Conditions
Detailed information on the most common types of skin conditions, including laser surgery for skin conditions

Types of Stroke
Strokes are classified as either ischemic or hemorrhagic. Ischemic strokes are caused by blockage of an artery. Hemorrhagic strokes are caused by bleeding in the brain.

Types of Surgery
Detailed information on the different types of surgery, including surgical diagnosis, optional surgery, elective surgery, required surgery, urgent surgery, or emergency surgery

Types of Surgery, Prostate Cancer
Long-term, serious side effects of prostate surgery are somewhat less common now than in the past, as new surgical methods continue to be introduced.

Typhoid Fever
Detailed information on typhoid fever, including spread, symptoms, diagnosis, treatment, prevention, and traveling