265 results found
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
… 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 …
Medical tests
… Overview A folate test measures the amount of folate in the blood. Folate is one of many B vitamins. The body needs folate for normal growth and to make red blood cells (RBC) , white blood cells (WBC) , and platelets . Folate also is important …
Medical tests
… , or the genetic material ( DNA or RNA ) of HIV in the blood or another type of sample. This can show if an HIV infection is present (HIV-positive). HIV infects white blood cells called CD4+ cells. They are part of the body's … to 12 weeks for HIV antibodies or antigens to appear in the blood. The period between becoming infected with HIV and the …
Medical tests
… protein test measures the total amount of protein in the blood. It also measures the amounts of two major groups of proteins in the blood: albumin and globulin. Albumin. This is made mainly in the liver. It helps keep the blood from leaking out of blood vessels. Albumin also helps …
Medical tests
… called a catheter that is inserted into the heart through blood vessels. A cardiac catheterization can check blood flow in the coronary arteries. It also checks the … ). This test can include a coronary angiogram, which checks blood flow in the coronary arteries . An angiogram can show …
