Health Library

UA
This test looks at a sample of your urine, to help diagnose, find, or track many conditions, such as diabetes or urinary tract infections.

UAE
This procedure, also be referred to as uterine fibroid embolization (UFE), is a minimally-invasive surgery that involves identifying which arteries supply blood to the fibroids and then blocking off those arteries.

UBT
This is a breath test that checks for H. pylori, a common infection that can cause ulcers and other stomach irritations.

UDP glucose 4-epimerase deficiency disease
This test looks for enzyme activity in the red blood cells in your child’s blood. It can help diagnose galactosemia, a rare inherited disorder.

UDP glucose hexose-1-phosphate uridylyltransferase deficiency
This test looks for enzyme activity in the red blood cells in your child’s blood. It can help diagnose galactosemia, a rare inherited disorder.

UDP-galactose-4-epimerase deficiency disease
This test looks for enzyme activity in the red blood cells in your child’s blood. It can help diagnose galactosemia, a rare inherited disorder.

UFE
This procedure, also be referred to as uterine fibroid embolization (UFE), is a minimally-invasive surgery that involves identifying which arteries supply blood to the fibroids and then blocking off those arteries.

UGI
An upper gastrointestinal series (UGI) is an x-ray examination of the upper gastrointestinal (GI) tract, including the esophagus, stomach, and duodenum.

Ulcerative Colitis in Children
Detailed information on ulcerative colitis, including causes, symptoms, diagnosis, and treatment

Ultrafast Computed Tomography (Ultrafast CT Scan)
Ultrafast CT, or electron-beam computed tomography (EBCT) can take multiple images of the heart within the time of a single heartbeat, and can detect very small amounts of calcium within the heart and the coronary arteries.

Ultrafast CT
Ultrafast CT, or electron-beam computed tomography (EBCT) can take multiple images of the heart within the time of a single heartbeat, and can detect very small amounts of calcium within the heart and the coronary arteries.

Ultrasonography
Detailed information on ultrasonograpy, also called sonography including information on how the procedure is performed

Ultrasound
Detailed information on ultrasonograpy, also called sonography including information on how the procedure is performed

Ultrasound, Abdominal
Abdominal ultrasound is a procedure that uses sound wave technology to assess the organs, structures, and blood flow inside the abdomen.

Ultrasound, Breast
Ultrasound, or sound wave technology is used to examine breast tissue. It may also be used to assess blood flow to areas inside the breasts.

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

Ultrasound, Carotid Artery
A carotid artery duplex scan is used to assess blockage or narrowing of the carotid arteries of the neck and/or the branches of the carotid artery.

Ultrasound, Chest
Chest ultrasound is a procedure in which sound wave technology is used alone, or along with other types of diagnostic methods, to examine the organs and structures of the chest.

Ultrasound, Fetal
Fetal ultrasound is a test used during pregnancy that creates an image of the fetus in the mother's uterus, or womb.

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

Ultrasound, Kidney
An ultrasound of the kidney uses An ultrasound of the kidney is a procedure in which sound wave technology is used to assess the size, shape, and location of the kidneys in order to detect injuries, abnormalities or disease.

Ultrasound, Mammography
Ultrasound, or sound wave technology is used to examine breast tissue. It may also be used to assess blood flow to areas inside the breasts.

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

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

Ultrasound, Pregnancy
Fetal ultrasound is a test used during pregnancy that creates an image of the fetus in the mother's uterus, or womb.

Ultrasound, Renal
An ultrasound of the kidney uses An ultrasound of the kidney is a procedure in which sound wave technology is used to assess the size, shape, and location of the kidneys in order to detect injuries, abnormalities or disease.

Ultraviolet Radiation
Detailed information on the effects of ultraviolet light and exposure categories according the Ultraviolet (UV) Index

Unintentional Injury Statistics
Statistics relating to unintentional injuries

Uniparental Disomy
This test is used to see if a child has certain chromosome changes.

Uniparental Disomy: Prader-Willi Syndrome, Angelman Syndrome
Detailed information on uniparental disomy

Unsealed Internal Radiation Therapy
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.

Upper Gastrointestinal Endoscopy
Esophagogastroduodenoscopy (EGD) is a diagnostic procedure used to diagnose structural or functional abnormalities of the esophagus, stomach, and/or duodenum.

Upper Gastrointestinal Series
An upper gastrointestinal series (UGI) is an x-ray examination of the upper gastrointestinal (GI) tract, including the esophagus, stomach, and duodenum.

Upper Gastrointestinal Tract X-rays
An upper gastrointestinal series (UGI) is an x-ray examination of the upper gastrointestinal (GI) tract, including the esophagus, stomach, and duodenum.

Upper GI Endoscopy
Esophagogastroduodenoscopy (EGD) is a diagnostic procedure used to diagnose structural or functional abnormalities of the esophagus, stomach, and/or duodenum.

Upper GI Series
An upper gastrointestinal series (UGI) is an x-ray examination of the upper gastrointestinal (GI) tract, including the esophagus, stomach, and duodenum.

Upper Respiratory Infections
Detailed information on upper respiratory infections, upper respiratory infections symptoms, upper respiratory infections treatment

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

Urea breath test
This is a breath test that checks for H. pylori, a common infection that can cause ulcers and other stomach irritations.

Urea nitrogen
This test measures the amount of urea nitrogen in your blood. It can help your doctor find out if you have kidney disease or another kidney disorder.

Urea Nitrogen Clearance (Urine)
This test measures the amount of urea nitrogen in your urine. The test can help diagnose kidney problems.

Ureterocele and Ureteral Duplication
Detailed information on ureterocele and ureteral duplication, including causes, diagnosis, and treatment

Ureteropyelogram, Retrograde
A retrograde pyelogram is a type of x-ray that uses dye to highlight the bladder, ureters, and renal pelvis, and is usually performed during a procedure called cystoscopy.

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

Uric Acid (Blood)
This test measures the amount of uric acid in your blood. Too much uric acid can cause gout or kidney stones.

Uric Acid (Synovial Fluid)
This test measures the amount of uric acid in the fluid of your joints. The test can help your doctor find out if you have gout, a type of arthritis.

Uric Acid (Urine)
This test is used to find out whether you have gout. It can also be used to monitor you during cancer treatment and to check your urine after you've had a kidney stone.

Urinalysis
This test is used to find out whether you have gout. It can also be used to monitor you during cancer treatment and to check your urine after you've had a kidney stone.

Urinalysis (calcium)
This test measures the level of calcium in your urine. If too much calcium builds up in your urine, you may be at risk for kidney stones.

Urinalysis, microscopic exam
This test looks at a sample of your urine under a microscope. It can see cells from your urinary tract, blood cells, crystals, bacteria, parasites, and cells from tumors.

Urinary Conditions
Detailed information on the most common urinary conditions for women, including urinary incontinence, urinary tract infections, and interstitial cystitis

Urinary Incontinence
Urinary incontinence is the loss of urine control, or the inability to hold your urine until you can reach a bathroom.

Urinary methylmalonic acid (MMA)
This test measures the amount of a substance called methylmalonic acid (MMA) in your urine. It can help diagnose a B12 deficiency.

Urinary MMA
This test measures the amount of a substance called methylmalonic acid (MMA) in your urine. It can help diagnose a B12 deficiency.

Urinary Tract and Kidney Infections
During pregnancy, the kidney enlarges and the bladder is compressed by the growing uterus. These and other factors make it more likely for a woman to develop a urinary tract infection.

Urinary Tract Infection
Detailed information on urinary tract infections, including causes, symptom, diagnosis, treatment, and prevention

Urinary Tract Infections (UTI)
Detailed information on urinary tract infections, including causes, symptom, diagnosis, treatment, and prevention

Urinary Tract Infections (UTIs)
Urinary tract infections are a serious, but common, health problem that affects millions of people each year. Women are especially prone to urinary tract infections.

Urine albumin
This test looks for a protein called albumin in your urine. The test is used to check for kidney damage or disease.

Urine albumin
This test checks the amount of protein in your urine. Too much protein can be a sign of dehydration, kidney disease, or other health issues.

Urine Chemistry
Detailed information on clinical chemistry and the most common clinical chemistry tests

Urine chloride
This test measures the amount of chloride in your urine. Knowing your chloride level is useful if you have a condition called metabolic alkalosis.

Urine Collection, 24-Hour
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.

Urine C-peptide
This test measures how much insulin your body produces. This is important if you have hypoglycemia or other issues related to diabetes.

Urine creatinine
This test measures the level of a substance called creatinine in your urine. Too much creatinine may be a sign of kidney disease.

Urine Cytology
This test looks at a sample of your urine to see if it contains abnormal cells. The test is used to diagnose cancers of the urinary tract, including cancers of the kidney, bladder, ureter, and urethra.

Urine examination
This test looks at a sample of your urine, to help diagnose, find, or track many conditions, such as diabetes or urinary tract infections.

Urine examination with microscope
This test looks at a sample of your urine to see if it contains abnormal cells. The test is used to diagnose cancers of the urinary tract, including cancers of the kidney, bladder, ureter, and urethra.

Urine Flow Studies
Uroflowmetry is a quick, simple diagnostic screening test that is commonly performed to determine if there is obstruction to normal urine outflow.

Urine Flow Test
Uroflowmetry is a quick, simple diagnostic screening test that is commonly performed to determine if there is obstruction to normal urine outflow.

Urine free cortisol test
This test looks for two rare medical conditions: Cushing's syndrome and Addison's disease, as well as other diseases that affect your pituitary and adrenal glands.

Urine glucose
This test is used to indirectly find out if your levels of glucose – blood sugar – are within a healthy range. It's used to monitor both type 1 and type 2 diabetes.

Urine ketones
This test checks the amount of ketones you have in your body. People with diabetes may have high levels of ketones.

Urine microalbumin
This test looks for minuscule amounts of albumin in your urine. The test can find out whether diabetes has damaged your kidneys.

Urine myoglobin
This test measures a protein called myoglobin in your urine. The test can help find out whether your muscle tissue has been injured.

Urine Protein (Dipstick)
This test checks the amount of protein in your urine. Too much protein can be a sign of dehydration, kidney disease, or other health issues.

Urine protein electrophoresis
This urine test is used mainly to diagnose and monitor multiple myeloma, a blood cancer.

Urine sodium test
This test measures the amount of sodium, or salt, in your urine. This test can help your doctor find out whether you have high blood pressure.

Urine stone risk profile
This test checks your urine for chemicals that might cause your body to form kidney stones.

Urine test
This test looks at a sample of your urine, to help diagnose, find, or track many conditions, such as diabetes or urinary tract infections.

Urine toxicology 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.

Urine urea nitrogen
This test measures the amount of urea nitrogen in your urine. The test can help diagnose kidney problems.

Urine Volume
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.

Urine Volume Test
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.

Urodynamic Studies
Uroflowmetry is a quick, simple diagnostic screening test that is commonly performed to determine if there is obstruction to normal urine outflow.

Uroflowmetry
Uroflowmetry is a quick, simple diagnostic screening test that is commonly performed to determine if there is obstruction to normal urine outflow.

Urogenital Disorders
Detailed information on the most common urogenital disorders, including bladder cancer, cystocele (fallen bladder), hematuria, blood in the urine, impotence, erectile dysfunction, interstitial cystitis, male factor infertility, prostate disease, benign prostatic hyperplasia, BPH, prostate cancer, urinary incontinence, urinary tract infection, vesicoureteral reflux

Urticaria/Hives
Detailed information on urticaria, also called hives, including what food and medicines commonly cause hives

Usher Syndrome
Detailed information on Usher syndrome, including types, diagnosis, and treatment

Uterine Ablation
Endometrial ablation is a procedure to permanently remove a thin tissue layer of the lining of the uterus to stop or reduce excessive or abnormal bleeding in women for whom childbearing is complete.

Uterine Artery Embolization
This procedure, also be referred to as uterine fibroid embolization (UFE), is a minimally-invasive surgery that involves identifying which arteries supply blood to the fibroids and then blocking off those arteries.

Uterine Cancer
Cancer of the uterus usually occurs around the time menopause begins. The occasional reappearance of bleeding should not be considered simply part of menopause, but should be checked by a doctor.

Uterine Fibroid Embolization
This procedure, also be referred to as uterine fibroid embolization (UFE), is a minimally-invasive surgery that involves identifying which arteries supply blood to the fibroids and then blocking off those arteries.

Uterine Prolapse
Uterine prolapse is a condition that occurs when the muscles and tissue in your pelvis weaken. Your uterus drops down into your vagina, or even comes out through your vaginal opening.

Uterus Scraping
A dilation and curettage procedure, also called a D and C, is a surgical procedure in which the cervix is dilated so that the cervical canal and uterine lining can be scraped with a spoon-shaped instrument to remove abnormal tissues.

UTP hexose-1-phosphate uridylyltransferase deficiency
This test looks for enzyme activity in the red blood cells in your child’s blood. It can help diagnose galactosemia, a rare inherited disorder.

UV Exposure Categories
Detailed information on the effects of ultraviolet light and exposure categories according the Ultraviolet (UV) Index