313 results found
Medical tests
… Test Overview Partial thromboplastin time (PTT) is a blood test that measures the time it takes your blood to … closely checked. If you have a longer PTT, you may have a higher risk of bleeding. Medical Tests: … closely checked. If you have a longer PTT, you may have a higher risk of bleeding. Medical Tests: …
Medical tests
… Test Overview A d-dimer test is a blood test that measures a substance that is released when a … means that a blood clotting problem isn't likely. A higher-than-normal d-dimer level might mean that there is a blood-clotting problem. But a higher level might be caused by some other health problem or …
Medical tests
… It includes the central visual field—which detects the highest degree of detail—and the peripheral visual fields. … stroke, head injury, or other condition that causes reduced blood flow to the brain. Colour vision tests These tests may … the appointment. This can help your child co-operate better during the real testing. Many medicines may affect the …
Medical tests
… how much human immunodeficiency virus (HIV) is in the blood. The test measures the amount of the genetic material ( RNA ) of HIV in the blood. Viral load is first measured when you are diagnosed … undetectable. This means there is very little virus in your blood. Why It Is Done A viral load test is done to watch for …
Medical tests
… antigen test also may be used to screen people who are at high risk for having giardiasis. Results A test that detects … antigen test also may be used to screen people who are at high risk for having giardiasis. Results A test that detects …
Medical tests
… Information Test Overview The hepatitis A virus test is a blood test that shows if you have a hepatitis A infection … made by the body to fight the virus. They will be in your blood if you have a hepatitis A infection now or have had … to 12 weeks after you are first infected. They stay in your blood and protect you from hepatitis A permanently. Why It …
Medical tests
… Test Overview A breath alcohol test is an estimate of your blood alcohol concentration (BAC). The test measures the … quickly. The amount of alcohol in your blood reaches its highest level about 60 minutes after you drink. But food in … amount of time it takes for the blood alcohol to reach its highest level. Most of the alcohol is broken down in the …
Medical tests
… You get an injection of a radioactive tracer into your blood. Then your doctor uses a special camera to see how well your heart is pumping blood. Invasive procedure. This test is done as part of a … of your heart muscle as your ventricles fill and pump blood. The size of your ventricles. How efficiently your …
Medical tests
… Results Test Overview A CD4+ count is a blood test to see how well the immune system is working in … low CD4+ count usually means a weakened immune system and a higher chance of getting opportunistic infections. Why It Is … low CD4+ count usually means a weakened immune system and a higher chance of getting opportunistic infections. Why It Is …
Medical tests
… Information Test Overview Hepatitis C virus (HCV) test is a blood test that looks for the genetic material ( RNA ) of … makes against HCV. These proteins will be present in your blood if you have a hepatitis C infection now or have had … choose the proper treatment. HCV is spread through infected blood. There is no vaccine available to prevent hepatitis C. …
