282 results found
Medical tests
… taking a steroid medicine called dexamethasone changes the levels of the hormone cortisol in the blood. This test checks for a condition in which large … obesity, kidney failure, pregnancy, and uncontrolled diabetes. The night before the blood test, you will take a …
Medical tests
… of mucus. The stool may be examined for hidden (occult) blood, fat, meat fibres, bile , white blood cells , and sugars called reducing substances. The pH of the stool also … viruses, fungi, or parasites. The stool contains low levels of enzymes , such as trypsin or elastase. Many …
Medical tests
… A bilirubin test measures the amount of bilirubin in a blood sample. Bilirubin is a brownish yellow substance found … in bile . It is produced when the liver breaks down old red blood cells. Bilirubin is then removed from the body through … indirect bilirubin. Total bilirubin and direct bilirubin levels are measured directly in the blood. Indirect …
Medical tests
… test measures the level of the hormone gastrin in the blood. Gastrin is produced by cells, called G cells, in the … the stomach, G cells trigger the release of gastrin in the blood. As blood levels of gastrin rise, the stomach releases acid (gastric …
Medical tests
… ("tox screen") checks for drugs or other chemicals in your blood, urine, or saliva. Drugs can be swallowed, inhaled, … heroin. Testing is often done on urine or saliva instead of blood. Many drugs will show up in a urine or saliva sample. … tests Normal: No unexpected drugs are found in the sample. Levels of prescription or non-prescription medicines found …
Medical tests
… gland . Cortisol is made by the adrenal glands. Cortisol levels get higher when the pituitary gland releases … (ACTH). Cortisol has many functions. It helps the body use sugar (glucose) and fat for energy ( metabolism ). It helps … not get toilet paper, pubic hair, stool (feces), menstrual blood, or anything else in your urine sample. How It Feels …
Medical tests
… (hCG) test is done to check for the hormone hCG in blood or urine. Some hCG tests measure the exact amount. … used to see if a woman is pregnant. HCG can be found in the blood before the first missed menstrual period. This can be … an egg or sperm. (These are called germ cell tumours.) HCG levels are often tested in a woman who may have tissue that …
Medical tests
… measures the amount of human growth hormone (GH) in the blood. GH is made by the pituitary gland and is needed for … test, unless your doctor tells you to. How It Is Done Blood levels of growth hormone (GH) can change quickly, so more … should also be high. High GH levels may also be caused by diabetes , kidney disease, or starvation. These conditions …
Medical tests
… A chloride test measures the level of chloride in your blood or urine. Chloride is one of the most important electrolytes in the blood. It helps keep the amount of fluid inside and outside … range may still be normal for you. Abnormal High chloride levels may be caused by: Dehydration , such as from diarrhea …
Medical tests
… the urine. Aldosterone helps regulate sodium and potassium levels in the body. This helps control blood pressure and the balance of fluids and electrolytes in … as the types of kidney disease seen in people who also have diabetes. Heparin treatment. Heparin is a medicine that …
