3943 results found
Medical tests
… Growth Hormone Test On this page: Test Overview Why It Is Done How To … measures the amount of human growth hormone (GH) in the blood. GH is made by the pituitary gland and is needed for … food for energy ( metabolism ). The amount of GH in the blood changes during the day and is affected by exercise, …
Medical tests
… Phenylketonuria (PKU) Test On this page: Test Overview Why It Is Done How To … tyrosine, the phenylalanine level builds up in the baby's blood and can cause brain damage, seizures, and intellectual … disease, you must inherit the gene from each parent. The blood sample for PKU is usually taken from your baby's heel …
Medical tests
… Catecholamines in Urine Test On this page: Test Overview Why It Is Done How To … When you feel stressed, these hormones increase heart rate, blood pressure, breathing rate, muscle strength, and mental alertness. They also lower the amount of blood that goes to the skin and intestines. They increase …
Medical tests
… CD4+ Count Test On this page: Test Overview Why It Is Done How To … Results Test Overview A CD4+ count is a blood test to see how well the immune system is working in … virus (HIV) . CD4+ cells are a type of white blood cell. White blood cells are important in fighting …
Medical tests
… Tissue Type Test On this page: Test Overview Why It Is Done How To … Test Overview A tissue type test is a blood test that identifies substances called antigens on the … antigen pattern for donated tissue or organs (including a blood platelet transfusion or bone marrow transplant) is a …
Medical tests
… Tay-Sachs Test On this page: Test Overview Why It Is Done How To … amount of an enzyme called hexosaminidase A (Hex A) in the blood. Hex A breaks down fatty substances in the brain and … children. The Tay-Sachs enzyme test is usually done on blood taken from a vein or from the umbilical cord right …
Medical tests
… Creatine Kinase Test On this page: Test Overview Why It Is Done How To … enzyme also can be found in smaller amounts in the brain. A blood test to check the level of CK can show if there has … It Is Done A health professional uses a needle to take a blood sample, usually from the arm. How It Feels When a …
Medical tests
… Hepatitis B Virus Tests On this page: Test Overview Why It Is Done How To … Test Overview Hepatitis B tests are blood tests that show whether you have an active hepatitis B … It Is Done A health professional uses a needle to take a blood sample, usually from the arm. How It Feels When a …
Medical tests
… Lung Function Tests On this page: Test Overview Why It Is Done How To … lungs put oxygen into and remove carbon dioxide from your blood. Types of lung function tests include: Spirometry. Gas … let you know how well gases are being absorbed into your blood from your lungs. Gas diffusion tests include: Arterial …
Medical tests
… Antithyroid Antibody Tests On this page: Test Overview Why It Is Done How To … tissue or make the cells produce thyroid hormones. They are blood tests. Antibodies that destroy thyroid tissue can lead … It Is Done A health professional uses a needle to take a blood sample, usually from the arm. How It Feels When a …
