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:
“It is only blood that can wash away such an outrage; die or kill.”
—Pierre Corneille (1606–1684)
“Poetry is important. No less than science, it seeks a hold upon reality, and the closeness of its approach is the test of its success.”
—Babette Deutsch (1895–1982)
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