289 results found
Medical tests
… waste product creatinine (say "kree-AT-uh-neen") in your blood and urine. These tests tell how well your kidneys are … creatinine level shows how well your kidneys are working. A high level may mean that your kidneys aren't working as they … and strenuous exercises. Shock. This is low blood pressure with many causes including severe bleeding and very …
Medical tests
… sodium and potassium levels in the body. This helps control blood pressure and the balance of fluids and electrolytes in the … stimulates the adrenal glands to release aldosterone. High levels of both renin and aldosterone are normally …
Medical tests
… When you feel stressed, these hormones increase heart rate, blood pressure, breathing rate, muscle strength, and mental … glands to release too many hormones. And that can cause high blood pressure, excessive sweating, headaches, fast …
Medical tests
… measures the amount of the amino acid homocysteine in the blood. Why It Is Done A homocysteine blood test is done to: … ball over the needle site as the needle is removed. Put pressure on the site and then put on a bandage. How It Feels … with you in relation to your symptoms and past health. High values High values of homocysteine may be caused by: …
Medical tests
… Test Overview A reticulocyte count is a blood test that measures how fast red blood cells called … prematurely, such as hemolytic anemia . Also, being at high altitudes may cause reticulocyte counts to rise, to … ball over the needle site as the needle is removed. Put pressure on the site and then put on a bandage. How It Feels …
Medical tests
… strenuous exercise for at least 8 hours before your first blood sample is taken. (You can drink water before the … that isn't in the normal range may still be normal for you. High values High glucose levels may be caused by: Diabetes. … diuretics , and some medicines used to treat high blood pressure, HIV, or AIDS. Large amounts of the hormone …
Medical tests
… ("tox screen") checks for drugs or other chemicals in your blood, urine, or saliva. Drugs can be swallowed, inhaled, … (therapeutic) range, or Above the therapeutic range, or High enough that they may be toxic. High values High levels may be caused by a drug overdose, …
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 … that isn't in the normal range may still be normal for you. High values Values may be high because of: Inflammation of …
Medical tests
… (hCG) test is done to check for the hormone hCG in blood or urine. Some hCG tests measure the exact amount. … that isn't in the normal range may still be normal for you. High values If you are pregnant, very high levels of hCG can mean a multiple pregnancy (such as …
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 …
