5229 results found
Medical tests
… Vision Tests On this page: Test Overview Why It Is Done How To … Results Test Overview Vision tests check many different functions of the eye. Some of the tests … as two numbers, such as 20/20 (6/6) or 20/100 (6/30). The first number is the distance you stand from the chart, …
Medical tests
… Viral Tests On this page: Test Overview Why It Is Done How To … done to: Find a viral infection that is causing symptoms. Check a person after exposure to a virus. For example, a … Antibody titers that get higher over 3 weeks from the first sample to the second mean the infection occurred …
Medical tests
… high levels of progesterone, starting near the end of the first trimester and continuing until the baby is born. Levels of … substance (tracer) within the last 7 days. Recent tests such as a thyroid scan or bone scan that used a …
Medical tests
… test, or hemoglobin A1c, is a blood test that checks the amount of sugar (glucose) bound to the hemoglobin … lifespan of red blood cells, such as the second or third trimester of pregnancy, a recent blood loss or a blood … for problems. Why It Is Done The A1c test is one of the tests used to diagnose prediabetes and diabetes. If you have …
Medical tests
… Herpes Tests On this page: Test Overview Health Tools Why It Is … or sores are present, a sample from a sore can be tested to check if it is caused by the herpes virus. HSV testing may … does not mean you do not have a herpes infection. If the first test is negative but you have symptoms of herpes, more …
Medical tests
… Esophagus Tests On this page: Test Overview Why It Is Done How To … food and liquid down to the stomach. Esophagus tests can check how well the muscles in the tube work, how strong the … common tests include: pH monitoring (acidity test). This checks the acid content (pH) in the esophagus. A low pH for …
Medical tests
… Syphilis Tests On this page: Test Overview Health Tools Why It Is … Information Test Overview Syphilis tests are done to check for a syphilis infection. They look for antibodies to … is done on blood, body fluid, or tissue samples. If a first screening test shows signs of syphilis, another test …
Medical tests
… Neuropsychological Tests On this page: Test Overview Why It Is Done How To … or injuries is working. How To Prepare Make sure you eat first and are well rested so that being tired or hungry … on the particular brain functions that your doctor wants to check. The tests are meant to test your limits, so don't be …
Medical tests
… Chlamydia Tests On this page: Test Overview Health Tools Why It Is … infection (STI) are caused by a chlamydia infection. Check people who are at high risk for being infected with … wipe the genital area clean before urinating. Collect the first part of your urine stream, just as you start to …
Medical tests
… Urodynamic Tests On this page: Test Overview Why It Is Done How To … Results Test Overview Urodynamic testing is a group of tests that show how your body stores and releases urine. The … filled with water through the catheter until you have the first urge to urinate. The amount of water in the bladder is …
