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.
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Famous quotes containing the words blood and/or test:
“In a battle all you need to make you fight is a little hot blood and the knowledge that it’s more dangerous to lose than to win.”
—George Bernard Shaw (1856–1950)
“The test of a vocation is the love of the drudgery it involves.”
—Logan Pearsall Smith (1865–1946)
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