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3,882 results
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17-ketosteroids are substances that form when the body breaks down male steroid sex hormones called androgens and other hormones released by the adrenal glands…
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17-OH progesterone is a blood test that measures the amount of 17-OH progesterone. This is a hormone produced by the adrenal glands and sex glands.…
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The 17-hydroxycorticosteroids (17-OHCS) test measures the level of 17-OHCS in the urine. 17-OH corticosteroids; 17-OHCS A 24-hour urine sample is needed. You…
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The 24-hour urinary aldosterone excretion test measures the amount of aldosterone removed in the urine in a day. Aldosterone can also be measured with a blood…
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The 24-hour urine copper test measures the amount of copper in a urine sample. Quantitative urinary copper A 24-hour urine sample is needed. On day 1, urinate…
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A 24-hour urine protein measures the amount of protein released in urine over a 24-hour period. Urine protein - 24 hour; Chronic kidney disease - urine…
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The 25-hydroxy vitamin D test is the most accurate way to measure how much vitamin D is in your body. Vitamin D helps control calcium and phosphate levels in…
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5-HIAA is a urine test that measures the amount of 5-hydroxyindoleacetic acid (5-HIAA). 5-HIAA is a breakdown product of a hormone called serotonin. This test…
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5'-nucleotidase (5'-NT) is a protein produced by the liver. A test can be done to measure the amount of this protein in your blood. 5'-NT Blood is drawn from a…
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A1C is a lab test that shows the average level of blood sugar (glucose) over the previous 3 months. It shows how well you are controlling your blood sugar to…
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A, B, AB, and O are the 4 major blood types. The types are based on small substances (molecules) on the surface of the blood cells. When people who have one…
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The ACE test measures the level of angiotensin-converting enzyme (ACE) in the blood. Serum angiotensin-converting enzyme; SACE A blood sample is needed. Follow…
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ACL reconstruction is surgery to reconstruct the ligament in the center of your knee. The anterior cruciate ligament (ACL) connects your shin bone (tibia) to…
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The ACTH test measures the level of adrenocorticotropic hormone (ACTH) in the blood. ACTH is a hormone released from the pituitary gland in the brain. Serum…
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The ACTH stimulation test measures how well the adrenal glands respond to adrenocorticotropic hormone (ACTH). ACTH is a hormone produced in the pituitary gland…
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Alkaline phosphatase (ALP) is a protein found in all body tissues. Tissues with higher amounts of ALP include the liver, bile ducts, and bone. A blood test can…
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Alkaline phosphatase (ALP) is an enzyme found in many body tissues such as liver, bile ducts, bone, and intestine. There are several different structural forms…
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Resources - ALS The following organizations are good resources for information on amyotrophic lateral sclerosis: Muscular Dystrophy Association --…
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Aarskog syndrome is a very rare disease that affects a person's height, muscles, skeleton, genitals, and appearance. It can be passed down through families…
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Aase syndrome is a rare disorder that involves anemia and certain joint and skeletal deformities. Aase-Smith syndrome; Hypoplastic anemia - triphalangeal…
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A swollen abdomen is when your belly area is bigger than usual. Swollen belly; Swelling in the abdomen; Abdominal distention; Distended abdomen Abdominal…
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An abdominal CT scan is an imaging method. This test uses x-rays to create cross-sectional pictures of the belly area. CT stands for computed tomography.…
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An abdominal magnetic resonance imaging scan is an imaging test that uses powerful magnets and radio waves. The waves create pictures of the inside of the…
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Abdominal aortic aneurysm (also called AAA or triple A) is part of the heart and vascular care medical specialty. The aorta is the main blood vessel that…
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Open abdominal aortic aneurysm (AAA) repair is surgery to fix a widened part in your aorta. This is called an aneurysm. The aorta is the large artery that…
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Abdominal bloating is a condition in which the belly (abdomen) feels full and tight. Your belly may look swollen (distended). Bloating; Meteorism Common causes…
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Abdominal exploration is surgery to look at the organs and structures in your belly area (abdomen). This includes your: Appendix Bladder Gallbladder Intestines…
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Abdominal girth is the measurement of the distance around the abdomen at a specific point. Measurement is most often made at the level of the belly button…
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An abdominal mass is swelling in one part of the belly area (abdomen). Mass in the abdomen An abdominal mass is most often found during a routine physical…
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Almost all children have abdominal pain at one time or another. Abdominal pain is pain in the stomach or belly area. It can be anywhere between the chest and…
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Abdominal rigidity is stiffness of the muscles in the belly area, which can be felt when touched or pressed. Rigidity of the abdomen When there is a sore area…
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Abdominal sounds are the noises made by the intestines. Bowel sounds Abdominal sounds (bowel sounds) are made by the movement of the intestines as they push…
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An abdominal tap is used to remove fluid from the area between the belly wall and the spine. This space is called the abdominal cavity or peritoneal cavity.…
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Choking is when someone is having a very hard time breathing because food, a toy, or other object is blocking the throat or windpipe (airway). A choking…
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Performing transplants for more than 50 years Experience can make all the difference when you need an organ transplant. If you have a condition like chronic…
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Abdominal ultrasound is a type of imaging test. It is used to look at organs in the abdomen, including the liver, gallbladder, spleen, pancreas, and kidneys.…
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An abdominal wall fat pad biopsy is the removal of a small part of the abdominal wall fat pad for laboratory study of the tissue. Amyloidosis - abdominal wall…
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Abdominal wall surgery is a procedure that improves the appearance of flabby, stretched-out abdominal (belly) muscles and skin. It is also called a tummy tuck.…
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An abdominal x-ray is an imaging test to look at organs and structures in the abdomen. Organs include the spleen, stomach, and intestines. When the test is…
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Abnormal uterine bleeding (AUB) is bleeding from the uterus that is longer than usual or that occurs at an irregular time. Bleeding may be heavier or lighter…
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Abnormally dark or light skin is skin that has turned darker or lighter than normal. Hyperpigmentation; Hypopigmentation; Skin - abnormally light or dark…
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An abscess is a collection of pus in any part of the body. In most cases, the area around an abscess is swollen and inflamed. Abscesses occur when an area of…
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An abdominal abscess is a pocket of infected fluid and pus located inside the belly (abdominal cavity). This type of abscess can be located near or inside the…
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An abnormal lack of sweat in response to heat may be harmful because sweating allows heat to be released from the body. The medical term for absent sweating is…
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An absence seizure is the term for a type of seizure involving staring spells. This type of seizure is a brief (usually less than 15 seconds) disturbance of…
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Absence of a woman's monthly menstrual period is called amenorrhea. Primary amenorrhea is when a girl has not yet started her monthly periods, and she: Has…
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Absence of a woman's monthly menstrual period is called amenorrhea. Secondary amenorrhea is when a woman who has been having normal menstrual cycles stops…
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Absent pulmonary valve is a rare defect in which the pulmonary valve is either missing or poorly formed. Oxygen-poor blood flows through this valve from the…