310 results found
Medical tests
… in which the body can't break down fatty substances as it should, so the fatty substances collect in the nerve cells … The Tay-Sachs enzyme test is usually done on blood taken from a vein or from the umbilical cord right after … this test to see whether you are a Tay-Sachs carrier, you should tell your doctor if you have had a blood transfusion …
Medical tests
… pictures of one area, such as the lumbar spine, may be taken. MRI may be used to check low back problems. There are … that are important to many health problems. Low Back Pain: Should I Have an MRI? Why It Is Done An MRI of the spine is … and a new disease or injury. Learn more Low Back Pain: Should I Have an MRI? How To Prepare In general, there's …
Medical tests
… belly into your uterus. About 30 mL (2 Tbsp) of fluid is taken out and looked at. This test may be done between weeks … that are important to many health problems. Pregnancy: Should I Have Amniocentesis? Why It Is Done Amniocentesis … fluid is infected (chorioamnionitis). Learn more Pregnancy: Should I Have Amniocentesis? How To Prepare You may want to …
Medical tests
… the amount of calcium in the bones. How To Prepare Do not take calcium supplements for 8 to 12 hours before you have the test. Your doctor will tell you if you should not eat or drink anything before your test. How It Is … has a different range for what's normal. Your lab report should show the range that your lab uses for each test. The …
Medical tests
… commonly used tests to help identify Lyme disease. It may take up to 2 months after becoming infected before … detect a chronic Lyme disease infection. Antibody testing should be done in a two-step process, using the ELISA … followed by the Western blot test. The Western blot test should be done for all people who've had a positive (or …
Medical tests
… and Osteoporosis Canada recommend that Canadian adults take daily vitamin D supplements. The vitamin D test is also … has a different range for what's normal. Your lab report should show the range that your lab uses for each test. The … has a different range for what's normal. Your lab report should show the range that your lab uses for each test. The …
Medical tests
… During CVS, a sample of the chorionic villus cells is taken. The sample is collected by putting a thin tube … that are important to many health problems. Pregnancy: Should I Have CVS (Chorionic Villus Sampling)? Why It Is … make plans to care for a sick child. Learn more Pregnancy: Should I Have CVS (Chorionic Villus Sampling)? How To …
Medical tests
… the voice box (larynx). A sample of thyroid tissue can be taken by: Fine-needle biopsy. Your doctor puts a thin needle … problems during your test. Your doctor will tell you if you should stop taking any of them before the test and how soon … test, you will lie on your back with a pillow under your shoulders, your head tipped backward, and your neck …
Medical tests
… time (PTT) is a blood test that measures the time it takes your blood to clot. A PTT test can be used to check … has a different range for what's normal. Your lab report should show the range that your lab uses for each test. The … has a different range for what's normal. Your lab report should show the range that your lab uses for each test. The …
Medical tests
… test measures the amount of space (volume) red blood cells take up in the blood. The value is given as a percentage of … has a different range for what's normal. Your lab report should show the range that your lab uses for each test. The … damage to body tissues (such as a heart attack ), severe physical or emotional stress (such as a fever, …
