329 results found
Medical tests
… Chorionic Villus Sampling (CVS) On this page: Test Overview Health Tools Why It Is Done How To Prepare How It Is Done … (CVS) is a test that can find certain problems with your fetus . These include many diseases that run in … sooner. This gives you more time to make decisions about your pregnancy or plan for the future. Health Tools Health …
Medical tests
… Angiogram On this page: Test Overview Health Tools Why It Is Done How To Prepare How It Is Done … Or it may be done to look for blocked blood vessels in your lungs. During an angiogram, the doctor will put a thin, flexible tube into a blood vessel in your groin or arm. This tube is called a catheter. The …
Medical tests
… Bone Density On this page: Test Overview Health Tools Why It Is Done How To Prepare How It Is Done … It measures the density of minerals (such as calcium ) in your bones. This information helps your doctor estimate the … . Early menopause . Low levels of vitamin D. Heavy alcohol use. Z-score Your bone density value may also be …
Medical tests
… the blood (such as electrolytes ). A chemistry screen tells your doctor about your general health, helps look for certain problems, and finds out … eat high-fat foods the night before the test. Do not drink alcohol before you have this test. How It Is Done A health …
Medical tests
… How To Prepare To prepare for an amylase test: Do not drink alcohol for 24 hours before the test. For a blood test for … test to prevent dehydration . How It Is Done Blood test A health professional uses a needle to take a blood sample, … you produce over a 24-hour period. You start collecting your urine in the morning. When you first get up, empty your …
Medical tests
… may affect the results of this test. Be sure to tell your doctor about all the non-prescription and prescription … to put a needle into the vein. Clean the needle site with alcohol. Put the needle into the vein. More than one needle … use. Having a family history of high homocysteine levels. Drinking more than 2 to 3 cups of coffee a day over many …
Medical tests
… How To Prepare Before having the gastrin test: Do not drink alcohol for 24 hours before the test. Do not eat for 12 … as you want up to 1 hour before the test. Be sure to tell your doctor about all the non-prescription and prescription … minutes before the blood sample is drawn. How It Is Done A health professional uses a needle to take a blood sample, …
Medical tests
… 24 hours. Uric acid is made from the natural breakdown of your body's cells. It's also made from the foods you eat. … get dehydrated . During the 24-hour period, don't drink alcohol. It lowers the amount of uric acid eliminated by the … doctor will also look at your results based on your age, health, and other factors. A value that isn't in the normal …
Medical tests
… exercise for several hours before the test. Do not clench your fist while having your blood drawn for a lactic acid … These activities may change the results. How It Is Done A health professional uses a needle to take a blood sample, … strenuous exercise or extreme overheating. Poisoning by alcohol (ethanol), wood alcohol (methanol), or antifreeze …
Medical tests
… water) for 10 to 12 hours before the test. How It Is Done Your health professional drawing blood will: Wrap an elastic … to put a needle into the vein. Clean the needle site with alcohol. Put the needle into the vein. More than one needle … pregnant or breastfeeding. Taking large doses of vitamin C. Drinking large amounts of alcohol. Having a test, such as a …
