294 results found
Medical tests
… a tissue type test. The closer the match of antigens, the more likely that an organ or tissue transplant will succeed. … mean that fewer anti-rejection drugs will be needed. The more similar the antigen patterns are from two people, the … whether your donor tissue can be used. How It Is Done A health professional uses a needle to take a blood sample, …
Medical tests
… . Dehydration generally causes BUN levels to rise more than creatinine levels. This causes a high … for 2 days (48 hours) before having the tests. Not eat more than 225 grams (8 oz) of meat, especially beef, or … 24 hours. Tell your doctor ALL the medicines and natural health products you take. Some may increase the risk of …
Medical tests
… your blood type is B-negative (B–). Rh blood type is even more important for pregnant women. A problem can occur when … blood cells. Rh sensitization does not generally affect the health of the baby during the pregnancy in which the … a baby with Rh-positive blood during a future pregnancy is more likely to be affected. After sensitization has …
Medical tests
… Be sure to tell your doctor if you are using any natural health products. How It Is Done Blood sample from a heel … available within 1 week. Your doctor will likely want to do more evaluation and another blood lead level test if: Your … available within 1 week. Your doctor will likely want to do more evaluation and another blood lead level test if: Your …
Medical tests
… hepatitis. You may have been exposed to the virus. You are more likely to have been exposed to the virus if you inject … drugs or are exposed to body fluids (such as if you are a health care worker). You've had other tests that show you … hepatitis. You may have been exposed to the virus. You are more likely to have been exposed to the virus if you inject …
Medical tests
… do anything before you have this test. How It Is Done The health professional drawing blood will: Wrap an elastic band … the needle site with alcohol. Put the needle into the vein. More than one needle stick may be needed. Attach a tube to … 3%–6% High values A high reticulocyte count may mean more red blood cells are being made by the bone marrow. This …
Medical tests
… of hemoglobin found in small amounts in adults. There are more than 350 types of abnormal hemoglobin. footnote 1 The … iron therapy for iron deficiency anemia . How It Is Done A health professional uses a needle to take a blood sample, … of hemoglobin A and a high level of hemoglobin F may mean a more severe form of thalassemia. High levels of hemoglobin F …
Medical tests
… the disease. Sickled red blood cells often cause recurring health problems called sickle cell crises . One set of genes … newborns for sickle cell disease. Talk with your doctor for more information. Why It Is Done A sickle cell test is done … Abnormal hemoglobin is present. In sickle cell trait, more than half of the hemoglobin is normal (hemoglobin A) …
Medical tests
… about how to take these before the test. How It Is Done A health professional uses a needle to take a blood sample, … that causes the fast destruction of red blood cells, need more folate to make more red blood cells . People who have certain conditions, …
Medical tests
… of time, such as from heart failure , the heart releases more BNP, increasing the blood level of BNP. Why It Is Done … to do anything before you have this test. How It Is Done A health professional uses a needle to take a blood sample, … A very high BNP level means that heart failure is much more likely. Your doctor will also look at other tests and …
