329 results found
Medical tests
… people have one of four blood types: A, B, AB, or O. If your red blood cells have: The A antigen. You have type A blood. The liquid portion of your blood (plasma) has antibodies that attack type B blood. … the mother's immune system makes antibodies. This antibody response is called Rh sensitization and, depending on …
Medical tests
… breathing it. The test measures the amount of hemoglobin in your blood that has bonded with carbon monoxide. Carbon … the oxygen that is normally carried by the hemoglobin in your red blood cells. As a result, your brain and other tissues get less oxygen. This can cause …
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 for … time is an important test because the time it takes your blood to clot may be affected by: Blood-thinning … clotting problems. Conditions such as antiphospholipid antibody syndrome or lupus anticoagulant syndrome develop when …
Medical tests
… there's nothing you have to do before this test, unless your doctor tells you to. How It Is Done A testicular … or hospital. Before the test, you'll need to take off all your clothes from the waist down. You will put on a gown. You'll be asked to lie on your back on a padded table. Folded towels will be used to …
Medical tests
… Normal Each lab has a different range for what's normal. Your lab report should show the range that your lab uses for each test. The normal range is just a guide. Your doctor will also look at your results based on your …
Medical tests
… of TB protein ( antigens ) under the top layer of skin on your inner forearm. If you have ever been exposed to the TB bacteria ( Mycobacterium tuberculosis ), your skin will react to the antigens by developing a firm … of PPD in a shot is put under the top layer of skin on your forearm. This is a good test for finding a TB …
Medical tests
… hemorrhoids. How To Prepare If you have hemorrhoids, tell your doctor before the examination begins. Your doctor will try not to bother your hemorrhoids. How It Is Done For a digital rectal …
Medical tests
… and doctors' groups suggest routine screening. Talk to your doctor about whether your child has been or should be tested. To screen children … brain itself prevents proper hearing. How To Prepare Tell your doctor if you take or have taken antibiotics that can …
Medical tests
… there's nothing you have to do before this test, unless your doctor tells you to. How It Is Done A health … Results Each lab has a different range for what's normal. Your lab report should show the range that your lab uses for each test. The normal range is just a …
Medical tests
… nicotine—or the chemicals it produces, such as cotinine—in your blood or urine. It's usually done by testing a sample of your blood or urine. The test is used to see if you smoke or … smoke but are using a quit-smoking aid like gum or a patch, your test result may be positive. But you may be able to get …
