282 results found
Medical tests
… Test Overview A chemistry screen is a blood test that measures the levels of several substances in the blood (such as electrolytes ). A chemistry screen tells your …
Medical tests
… Information Test Overview Prothrombin time (PT) is a blood test that measures how long it takes blood to clot. A prothrombin time test can be used to check … longer by: Blood-thinning medicine, such as warfarin. Low levels of blood clotting factors. A change in the activity …
Medical tests
… Test Overview Cardiac enzyme studies measure the levels of enzymes and proteins that are linked with injury … out of damaged heart muscle cells, and their levels in the bloodstream rise. The test might also check for an enzyme … are also found in other body tissues, their levels in the blood may rise when those other tissues are damaged. Cardiac …
Medical tests
… Test Overview A C-reactive protein (CRP) test is a blood test that measures the amount of a protein called C-reactive protein in your blood. C-reactive protein measures general levels of inflammation in your body. High levels of CRP are …
Medical tests
… Test Overview Thyroid antibody tests measure the levels of antibodies that can destroy thyroid tissue or make the cells produce thyroid hormones. They are blood tests. Antibodies that destroy thyroid tissue can lead … It Is Done A health professional uses a needle to take a blood sample, usually from the arm. How It Feels When a …
Medical tests
… An ammonia test measures the amount of ammonia in the blood. Most ammonia in the body forms when protein is broken … into urea , which is then eliminated in urine. Ammonia levels in the blood rise when the liver is not able to convert ammonia to …
Medical tests
… A vitamin D test measures the amount of vitamin D in the blood. Your body needs vitamin D to absorb calcium . Calcium … Why It Is Done You may need this test if you: Have low levels of calcium or phosphate . Have osteoporosis or low … It Is Done A health professional uses a needle to take a blood sample, usually from the arm. How It Feels When a …
Medical tests
… measures the amount of the amino acid homocysteine in the blood. Why It Is Done A homocysteine blood test is done to: Help identify vitamin B12 deficiency … per litre (mcmol/L) Many conditions can affect homocysteine levels. Your doctor will discuss any significant abnormal …
Medical tests
… test that uses dye and a camera to take pictures of the blood flow in an artery or a vein. An angiogram can be used … is a special concern for people who have kidney problems or diabetes or who are dehydrated . Special measures are used … is a special concern for people who have kidney problems or diabetes or who are dehydrated . Special measures are used …
Medical tests
… Test Overview Partial thromboplastin 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 bleeding … to find out if the right dose of heparin is being used. Low levels of blood clotting factors. A change in the activity …
