265 results found
Medical tests
… vitamin B12 test measures the amount of vitamin B12 in the blood. The body needs this B vitamin to make blood cells and to maintain a healthy nervous system . … the test. How It Is Done Your health professional drawing blood will: Wrap an elastic band around your upper arm to …
Medical tests
… Test Overview A breath alcohol test is an estimate of your blood alcohol concentration (BAC). The test measures the … directions, it can provide an accurate estimate of your blood alcohol level. There are different types of devices … drunk drivers. Within minutes after you drink alcohol, your blood alcohol concentration starts to rise. Unlike food, …
Medical tests
… for several reasons. It may be used to look for a blocked blood vessel. It may be used to find the cause of pain in … No signs of disease, inflammation, or infection are seen. Blood vessels and blood flow are normal. No blood clots are seen. Abnormal: …
Medical tests
… pericardium . It protects the heart and parts of the major blood vessels connected to the heart. Normally, there is a … fluid is sent to a lab where it is measured and checked for blood, microorganisms (such as bacteria, fungi , or viruses), white blood cells , sugar (glucose), cancer cells, and other …
Medical tests
… to measure the amount of this hormone in a pregnant woman's blood to see if the baby may have Down syndrome . Inhibin A … placenta during pregnancy. The level of inhibin A in the blood is used in a maternal serum quadruple screening test. … checks the levels of four substances in a pregnant woman's blood. The quad screen checks alpha-fetoprotein (AFP), human …
Medical tests
… You get an injection of a radioactive tracer into your blood. Then your doctor uses a special camera to see how well your heart is pumping blood. Invasive procedure. This test is done as part of a … of your heart muscle as your ventricles fill and pump blood. The size of your ventricles. How efficiently your …
Medical tests
… is most often used to find a pulmonary embolism . This is a blood clot that prevents normal blood flow in the lung. Two types of lung scans are usually … injected into a vein in your arm. It travels through your blood and into the lungs. Pictures from this scan can show …
Medical tests
… Overview A cardiac perfusion scan measures the amount of blood in your heart muscle at rest and after it has been … attack to see if areas of the heart are not getting enough blood or to find out how much heart muscle has been damaged … ) is given through an IV . The tracer travels through the blood and into the heart muscle. As the tracer moves through …
Medical tests
… the level of adrenocorticotropic hormone (ACTH) in the blood to check for problems with the pituitary gland and … stress. Cortisol is needed for life, so its levels in the blood are closely controlled. When cortisol levels rise, … as ACTH. ACTH is released in bursts, so its levels in the blood can vary from minute to minute. Interpretation of the …
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 … lymph nodes). Giant cell arteritis (painful swelling of the blood vessels in the head and neck). Rheumatoid arthritis …
