329 results found
Medical tests
… partly controls serum osmolality. Water constantly leaves your body as you breathe, sweat, and urinate. If you do not … of chemicals in your blood (serum osmolality) increases. When serum osmolality increases, your body releases ADH. … feel nothing at all from the needle. Or you might feel a quick sting or pinch. Risks There is very little chance of …
Medical tests
… different types of antibodies to help determine whether you were infected recently or sometime in the past. Why It … has been recent. EBV antibody testing is usually done when you have symptoms of infectious mononucleosis and a … feel nothing at all from the needle. Or you might feel a quick sting or pinch. Risks There is very little chance of …
Medical tests
… or come back. How To Prepare In general, there's nothing you have to do before this test, unless your doctor tells … to take a blood sample, usually from the arm. How It Feels When a blood sample is taken, you may feel nothing at all from the needle. Or you might feel a quick sting or pinch. Risks There is very little chance of …
Medical tests
… sample. Uric acid is produced from the natural breakdown of your body's cells and from the foods you eat. Most of the … to take a blood sample, usually from the arm. How It Feels When a blood sample is taken, you may feel nothing at all from the needle. Or you might feel a quick sting or pinch. Risks There is very little chance of …
Medical tests
… of ferritin in the blood shows how much iron is stored in your body. Why It Is Done A ferritin blood test is done to: … to take a blood sample, usually from the arm. How It Feels When a blood sample is taken, you may feel nothing at all from the needle. Or you might feel a quick sting or pinch. Risks There is very little chance of …
Medical tests
… this screening test is positive, it means there is a chance your baby has a birth defect. In that case, your doctor may … to take a blood sample, usually from the arm. How It Feels When a blood sample is taken, you may feel nothing at all from the needle. Or you might feel a quick sting or pinch. Risks There is very little chance of …
Medical tests
… problems or birth defects. Health Tools Health Tools help you make wise health decisions or take action to improve … to take a blood sample, usually from the arm. How It Feels When a blood sample is taken, you may feel nothing at all from the needle. Or you might feel a quick sting or pinch. Risks There is very little chance of …
Medical tests
… cells are bigger than red blood cells but fewer in number. When a person has a bacterial infection, the number of white cells rises very quickly. The number of white blood cells is sometimes used … diseases such as cancer. The use of corticosteroids , underactive adrenal glands , thyroid gland problems, certain …
Medical tests
… space (subarachnoid space) between the bones in your spine (spinal canal). A myelogram may be done to find a … takes 30 minutes to 1 hour. How It Feels You will feel a quick sting from a small needle that has medicine to numb … You may feel a quick, sharp pain down your buttock or leg when the needle is moved in your spine. You may find it hard …
Medical tests
… patterns match. The patterns are most likely to be similar when the donated organ or tissue comes from a close relative … diseases. How To Prepare In general, there's nothing you have to do before this test, unless your doctor tells … feel nothing at all from the needle. Or you might feel a quick sting or pinch. Risks There is very little chance of …
