329 results found
Medical tests
… into the urine. Also, vitamin D is converted to a more active form, causing the intestines to absorb more calcium … 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
… levels of both renin and aldosterone are normally present when the body is trying to conserve fluid and salt (sodium). … or low blood potassium levels. This is done when overactive adrenal glands or an abnormal adrenal growth are … 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
… veins. An angiogram is done for many reasons. For example, you may have this test to find the source of bleeding, such … arterial disease ) in people who have severe leg pain when walking. Check how bad atherosclerosis is in the … to watch the movement of the catheter in the blood vessels. When the catheter is in place, the dye is injected through …
Medical tests
… the levels of calcium and phosphorus in your blood. When the phosphorus level is measured, a vitamin D level, … feel nothing at all from the needle. Or you might feel a quick sting or pinch. Heel stick A brief pain, like a sting … higher in children than in adults. That's because of the active bone growth occurring in children. Results are …
Medical tests
… Why It Is Done This test is done to see if there is any active virus in the blood. It's sometimes used to see how … was effective. How to Prepare In general, there is nothing you have to do before this test, unless your doctor tells … may feel nothing at all from the needle, or you may feel a quick sting or pinch. Risks There is very little chance of …
Medical tests
… the neck that carry blood to the brain. The test may help your doctor decide if a procedure is needed to open a … to watch the movement of the catheter in the blood vessels. When the catheter is in place, the dye is injected through … from the numbing medicine. Most people don't have pain when the catheter is in the blood vessel. You may feel …
Medical tests
… test that can check for problem areas in certain tissues in your body. A radioactive tracer (tracer) called gallium citrate is injected … days), and 72 hours (3 days) after the tracer is injected. When you come in for the scan, you may need to remove your …
Medical tests
… organs for disease. During a liver and spleen scan, a radioactive tracer substance is put into a vein ( IV ) in the … liver and spleen after a belly injury. How To Prepare If you are breastfeeding, you may want to pump enough breast … at all from the needle in your vein, or you may feel a quick sting or pinch. You may find it hard to lie still …
Medical tests
… Test Overview Body temperature is a measure of how well your body can make and get rid of heat. The body is very … good at keeping its temperature within a safe range, even when temperatures outside the body change a lot. When you … A non-contact infrared thermometer can display a reading quickly and reduce the risk of spreading disease. But many …
Medical tests
… The sedimentation rate (sed rate) blood test measures how quickly red blood cells (erythrocytes) settle in a test tube … of the test tube in one hour, the higher the sed rate. When inflammation is present in the body, certain proteins … is working. How To Prepare In general, there's nothing you have to do before this test, unless your doctor tells …
