A blood test is a laboratory analysis performed on a blood sample that is usually extracted from a vein in the arm using a needle, or via fingerprick. Blood tests are used to determine physiological and biochemical states, such as disease, mineral content, drug effectiveness, and organ function. They are also used in drug tests.
Read more about Blood Test: Extraction
Famous quotes containing the words blood and/or test:
“In the tale, in the telling, we are all one blood. Take the tale in your teeth, then, and bite till the blood runs, hoping it’s not poison; and we will all come to the end together, and even to the beginning: living, as we do, in the middle.”
—Ursula K. Le Guin (b. 1929)
“It is commonly said, and more particularly by Lord Shaftesbury, that ridicule is the best test of truth; for that it will not stick where it is not just. I deny it. A truth learned in a certain light, and attacked in certain words, by men of wit and humour, may, and often doth, become ridiculous, at least so far, that the truth is only remembered and repeated for the sake of the ridicule.”
—Philip Dormer Stanhope, 4th Earl Chesterfield (1694–1773)