329 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 … ball over the needle site as the needle is removed. Put pressure on the site and then put on a bandage. How It Feels … (SI units) 110–1500 picograms per millilitre (pg/mL) High values High levels of vitamin B12 can occur in liver …
Medical tests
… Test Overview Thyroid testing Thyroid hormone tests are blood tests that check how well the thyroid gland is … has a different range for what's normal. Your lab report should show the range that your lab uses for each test. The … that may be related to your symptoms and past health. High values High thyroid hormone levels ( hyperthyroidism ) …
Medical tests
… test measures the amount of this enzyme in a sample of blood taken from a vein or in a sample of urine. Normally, … for only a short time. In the urine, amylase may remain high for several days. Why It Is Done A test for amylase is … has a different range for what's normal. Your lab report should show the range that your lab uses for each test. The …
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 … getting enough blood. If the lungs are working as they should, the results of the two scans will match. If the scan … that you have a blood clot. More tests may be needed. High probability. The results show a high likelihood of a …
Medical tests
… of chemicals dissolved in the liquid part (serum) of the blood. Chemicals that affect serum osmolality include … that isn't in the normal range may still be normal for you. High values High levels may be caused by: Too little water … by some medicines, including diuretics and certain blood pressure medicines. A condition called syndrome of …
Medical tests
… Test Overview A tonometry test measures the pressure inside your eye, which is called intraocular … 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 … be done several times for each eye. How It Feels Tonometry should not cause any eye pain. Your doctor will use eyedrops …
Medical tests
… of CSF are collected. The samples are studied for colour, blood cell counts, protein, glucose, and other substances. … fungi grow in the culture, an infection may be present. The pressure of the CSF also is measured during the procedure. … the space surrounding the spinal cord. If the pressure is high, it may be causing certain symptoms. A spinal tap may …
Medical tests
… A chloride test measures the level of chloride in your blood or urine. Chloride is one of the most important … balance. It also helps maintain proper blood volume, blood pressure, and pH of your body fluids. Tests for sodium, … kidney or adrenal gland problems. Help find the cause for high blood pH. A condition called metabolic alkalosis can be …
Medical tests
… the level of adrenocorticotropic hormone (ACTH) in the blood to check for problems with the pituitary gland and … cortisol levels change throughout the day. ACTH is normally highest in the early morning (between 6 a.m. and 8 a.m.) and … Be sure to ask your doctor if there are any foods that you should not eat. Many medicines can change the results of …
Medical tests
… the amount of follicle-stimulating hormone (FSH) in a blood sample. FSH is produced by the pituitary gland . In … of FSH varies throughout a woman's menstrual cycle and is highest just before she releases an egg (ovulates). In men, … sex organs (testicles or ovaries) are working as they should. Why It Is Done The amounts of FSH and other hormones …
