266 results found
Medical tests
… (CO2) is a gaseous waste product from metabolism . The blood carries carbon dioxide to your lungs, where it is exhaled. More than 90% of it in your blood exists in the form of bicarbonate (HCO3). The rest of … of carbon dioxide, bicarbonate, and carbonic acid in the blood. This test measures the level of bicarbonate in a …
Medical tests
… Test Overview A cold agglutinins blood test is done to check for conditions that cause the … the immune system in response to infection. They cause red blood cells to clump together (agglutinate) at low … generally have low levels of cold agglutinins in their blood. But lymphoma or some infections, such as mycoplasma …
Medical tests
… strenuous exercise for at least 8 hours before your first blood sample is taken. (You can drink water before the test.) How It Is Done A blood sample is taken when you arrive for the test. This is your fasting blood glucose value. It will be compared to other glucose …
Medical tests
… Test Overview A lactic acid test is a blood test that measures the level of lactic acid made in the body. Most of it is made by muscle tissue and red blood cells . When the oxygen level in the body is normal, … , a severe infection (sepsis), or shock —lower the flow of blood and oxygen throughout the body. Lactic acid levels can …
Medical tests
… An ammonia test measures the amount of ammonia in the blood. Most ammonia in the body forms when protein is broken … , which is then eliminated in urine. Ammonia levels in the blood rise when the liver is not able to convert ammonia to … caused by cirrhosis or severe hepatitis . For this test, a blood sample may be taken from either a vein or an artery. …
Medical tests
… of chemicals dissolved in the liquid part (serum) of the blood. Chemicals that affect serum osmolality include … proteins, and sugar (glucose). This test is done on a blood sample taken from a vein. A substance called … drink enough water, the concentration of chemicals in your blood (serum osmolality) increases. When serum osmolality …
Medical tests
… X-rays to provide detailed pictures of the heart and the blood vessels that go to the heart, lung, brain, kidneys, … and arms. This test can show narrowed or blocked areas of a blood vessel. It can also show whether there is a bulge ( … ) or a buildup of fatty material called plaque in a blood vessel. During a CT angiogram, you lie on a table that …
Medical tests
… how much human immunodeficiency virus (HIV) is in the blood. The test measures the amount of the genetic material ( RNA ) of HIV in the blood. Viral load is first measured when you are diagnosed … undetectable. This means there is very little virus in your blood. Why It Is Done A viral load test is done to watch for …
Medical tests
… Information Test Overview A parathyroid hormone (PTH) blood test measures the level of parathyroid hormone in the blood. This test is used to help identify … disease. PTH controls calcium and phosphorus levels in the blood. PTH is made by the parathyroid glands , which are …
Medical tests
… Risks Results Test Overview A ferritin blood test checks the amount of ferritin in the blood. Ferritin is a protein in the body that binds to iron; … marrow. Only a small amount of ferritin is found in the blood. The amount of ferritin in the blood shows how much …
