Health Care Encyclopedia
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Blood test Blood is drawn from a vein (venipuncture), usually from the inside of the elbow or the back of the hand. A needle is inserted into the vein, and the blood is collected in an air-tight vial or a syringe. Preparation may vary depending on the specific test.
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| Review Date: 8/13/2004 12:00:00 AM
Reviewed By: A.D.A.M. Medical Illustration Team
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