329 results found
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
… types of hemoglobin in the blood. Hemoglobin is the substance in red blood cells that carries oxygen. The most … Some diseases, such as severe forms of thalassemia , may cause hemoglobin A levels to be low and hemoglobin F levels to … types of hemoglobin in the blood. Hemoglobin is the substance in red blood cells that carries oxygen. The most …
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
… problems at school, work, or home. For example, it may be used to find out if a child has a learning disability , … . Intellectual disability . Autism spectrum disorder . Substance use disorder . Diseases of the nervous system, … . Intellectual disability . Autism spectrum disorder . Substance use disorder . Diseases of the nervous system, …
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
… . Sickle cell disease is an inherited blood disease that causes red blood cells to be deformed ( sickle-shaped ). The red blood cells deform because they contain an abnormal type of hemoglobin , called … by the body faster than normal blood cells. This causes anemia . Also, sickled cells can get trapped in blood …
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
… Overview Cardiac catheterization is a procedure your doctor uses to see images and get information about your child's … to make any cuts to do the procedure. Instead, the doctor uses a thin tube called a catheter. The catheter is put into … through the blood vessel to the heart. The doctor may use the catheter to take blood samples and measurements, …
