Blood Test

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:

    Oh, God! that bread should be so dear,
    And flesh and blood so cheap!
    Thomas Hood (1799–1845)

    The test is always how we treat the poor.
    Robert Frost (1874–1963)