322 results found
Medical tests
… of the waste product creatinine (say "kree-AT-uh-neen") in your blood and urine. These tests tell how well your kidneys … creatinine level shows how well your kidneys are working. A high level may mean that your kidneys aren't working as they … tract . Low values Low blood creatinine levels can mean lower muscle mass caused by a disease, such as muscular …
Medical tests
… (say "kat-uh-KOH-luh-meens") are hormones made mostly by your adrenal glands as a reaction to stress. When you feel … rate, muscle strength, and mental alertness. They also lower the amount of blood that goes to the skin and … glands to release too many hormones. And that can cause high blood pressure, excessive sweating, headaches, fast …
Medical tests
… prematurely, such as hemolytic anemia . Also, being at high altitudes may cause reticulocyte counts to rise, to help you adjust to the lower oxygen levels at high altitudes. Why It Is Done A … drawing blood will: Wrap an elastic band around your upper arm to stop the flow of blood. This makes the …
Medical tests
… may affect the results of this test. Be sure to tell your doctor about all the non-prescription and prescription … a vein. You may get a small bruise at the site. You can lower the chance of bruising by keeping pressure on the site … with you in relation to your symptoms and past health. High values High values of homocysteine may be caused by: …
Medical tests
… scan. A radioactive tracer is injected into a vein in your arm. It travels through your blood and into the lungs. … damage is very low compared with the benefits of the test. Steps you can take Most of the tracer will leave your body … that you have a blood clot. More tests may be needed. High probability. The results show a high likelihood of a …
Medical tests
… water) for 10 to 12 hours before the test. How It Is Done Your health professional drawing blood will: Wrap an elastic … a vein. You may get a small bruise at the site. You can lower the chance of bruising by keeping pressure on the site … (SI units) 110–1500 picograms per millilitre (pg/mL) High values High levels of vitamin B12 can occur in liver …
Medical tests
… sodium and potassium levels in the body. This helps control blood pressure and the balance of fluids and electrolytes in … stimulates the adrenal glands to release aldosterone. High levels of both renin and aldosterone are normally … (sodium). When a tumour that makes aldosterone is present, your aldosterone level will be high while a renin level will …
Medical tests
… the space surrounding the spinal cord. If the pressure is high, it may be causing certain symptoms. A spinal tap may … spinal canal. In rare cases, a spinal tap may be used to lower the pressure in the brain caused by too much CSF. How To Prepare Tell your doctor ALL the medicines and natural health products …
Medical tests
… Test Overview Lung function tests check to see how well your lungs work. The tests can find lung problems, measure … a mouthpiece connected to a recording device. The exact steps depend on which test you have. For example, you may be … with force after you inhale as deeply as you can. Normal or lower than predicted value Forced expiratory volume (FEV1) …
Medical tests
… Test Overview A tonometry test measures the pressure inside your eye, which is called intraocular pressure (IOP). This … pressure. But it is often used as a simple way to check for high IOP and is the easiest way to test children. This type … 27 mm Hg usually develop glaucoma unless the pressure is lowered with medicines. People who have an ongoing IOP …
