329 results found
Medical tests
… Overview Overview A complement test uses a blood sample to detect a group of proteins that help the body attack foreign substances. When there are a lot of foreign substances in the body, such as bacteria or viruses, a low …
Medical tests
… in the blood to help identify some diseases. Proteins are substances made up of smaller building blocks called amino … in an electrical field. Serum protein electrophoresis uses an electrical field to separate the proteins in the … albumin and globulin. Both albumin and globulin carry substances through the bloodstream. Using protein …
Medical tests
… involves having a skin or blood test to find out what substance, or allergen , may trigger an allergic response in a person. Skin tests are usually done because they are rapid, reliable, and generally less expensive … the skin. An intradermal allergy test may be done when a substance does not cause a reaction in the skin prick test …
Medical tests
… also known as antibodies , in your blood. Antibodies are substances made by the body's immune system in response to bacteria, viruses, fungus, animal dander, or cancer cells. Antibodies attach to the foreign substances so the immune system can destroy them. Antibodies …
Medical tests
… Overview A d-dimer test is a blood test that measures a substance that is released when a blood clot breaks up. … for blood-clotting problems. A d-dimer test can also be used to check how well a treatment is working. Why It Is … d-dimer test result means that there is very little of the substance that's released as a blood clot breaks up. Having …
Medical tests
… A (Hex A) in the blood. Hex A breaks down fatty substances in the brain and nerves. Tay-Sachs is an … inherited disease in which the body can't break down fatty substances as it should, so the fatty substances collect in … the results may mean. How It Is Done A health professional uses a needle to take a blood sample, usually from the arm. …
Medical tests
… during pregnancy. The level of inhibin A in the blood is used in a maternal serum quadruple screening test. Generally … 15 and 22 weeks, this test checks the levels of four substances in a pregnant woman's blood. The quad screen … or uE3), and the hormone inhibin A. The levels of these substances—along with a woman's age and other factors—help …
Medical tests
… the level of AFP in a pregnant woman's blood. AFP is a substance made in the liver of an unborn baby (fetus). The … non-pregnant women. The level of AFP in the blood is used in a serum quadruple screening test. This test is often … done between 15 and 22 weeks. It checks the levels of four substances in a pregnant woman's blood. They are the hormone …
Medical tests
… screen is a blood test that measures the levels of several substances in the blood (such as electrolytes ). A chemistry … problem is working. Some chemistry screens look at more substances in the blood than others do. The most complete … you have this test. How It Is Done A health professional uses a needle to take a blood sample, usually from the arm. …
Medical tests
… pictures of the tracer as it moves along. Your doctor can use these pictures to look for leaks, blockages, or any … to any more radiation while the scan is being done. A substance that stimulates the gallbladder may also be put … is working. You may be asked about your reaction to the substance used to stimulate the gallbladder. Sometimes …
