304 results found
Medical tests
… (hCG) test is done to check for the hormone hCG in blood or urine. Some hCG tests measure the exact amount. … that isn't in the normal range may still be normal for you. High values If you are pregnant, very high levels of hCG can mean a multiple pregnancy (such as …
Medical tests
… Test Overview An iron test checks the amount of iron in the blood. Iron (Fe) is a mineral needed for hemoglobin, the … iron-binding capacity (TIBC), and transferrin saturation. High and low values The values for serum iron, total … or another condition. The values are also used to see if a high amount of iron is caused by hemochromatosis or another …
Medical tests
… Risks Results Test Overview A ferritin blood test checks the amount of ferritin in the blood. … ) is present. Check to see if iron treatment to raise or lower the iron level is working. How To Prepare In general, … that isn't in the normal range may still be normal for you. High values Very high ferritin levels can mean a large …
Medical tests
… An ammonia test measures the amount of ammonia in the blood. Most ammonia in the body forms when protein is broken … failure. Check the level of ammonia in a person receiving high-calorie intravenous (IV) nutrition (hyperalimentation). … that isn't in the normal range may still be normal for you. High values High levels of ammonia in the blood may be …
Medical tests
… Test Overview Thyroid testing Thyroid hormone tests are blood tests that check how well the thyroid gland is … that may be related to your symptoms and past health. High values High thyroid hormone levels ( hyperthyroidism ) may be …
Medical tests
… test measures the level of D-xylose, a type of sugar, in a blood or urine sample. This test is done to help diagnose … to gain weight, especially when the child seems to be eating enough food. How To Prepare For 24 hours before a D-xylose test, do not eat foods high in pentose, a sugar similar to D-xylose. These foods …
Medical tests
… (AST) test measures the amount of this enzyme in the blood. AST is normally found in red blood cells , liver , … severe damage, AST levels rise in 6 to 10 hours and remain high for about 4 days. The AST test may be done at the same … or liver disease. Keep track of the effects of cholesterol-lowering medicines and other medicines that can damage the …
Medical tests
… of chemicals dissolved in the liquid part (serum) of the blood. Chemicals that affect serum osmolality include … that isn't in the normal range may still be normal for you. High values High levels may be caused by: Too little water … by some medicines, including diuretics and certain blood pressure medicines. A condition called syndrome of …
Medical tests
… measures the amount of this protein that may appear in the blood of some people who have certain kinds of cancers, … before birth, and it usually is not present in the blood of healthy adults. Why It Is Done The carcinoembryonic antigen … so your CEA may be normal even though you have cancer. High values Many conditions can change your CEA levels. Your …
Medical tests
… to: Check for coronary artery disease, which can reduce blood flow to the heart muscle during stress. Look at the … to use numbers to say how hard you are exercising. The higher the number, the harder you think you are exercising. … left ventricle with each heartbeat (ejection fraction) is lower than normal. There is fluid around the heart …
