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:

    “Blackberries
    Big as the ball of my thumb, and dumb as eyes
    Ebon in the hedges, fat
    With blue-red juices. These they squander on my fingers.
    I had not asked for such a blood sisterhood; they must love me.”
    —Sylvia Plath (1932–1963)

    “Whenever a true theory appears, it will be its own evidence. Its test is, that it will explain all phenomena.”
    —Ralph Waldo Emerson (1803–1882)