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Blood Tests Directory
Blood tests are laboratory tests that analyze various parts of your blood. The blood is usually extracted from a vein or from a finger tip via a finger prick. The blood tests can analyze physiological and chemical balances in the body and can determine types of diseases a person may have, how effective drugs are and organ function.
Medical Reference
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Blood Testing for Allergies
Blood testing for allergies is sometimes performed instead of skin tests. The experts at WebMD tell you why.
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Low White Blood Cell Count
Find out what this test measures, what's "normal," common reasons results aren't that, what it could mean, and what you can do about it.
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Creatinine and Creatinine Clearance Blood Tests
WebMD explains how creatinine and creatinine clearance tests are used to measure kidney function.
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What Is a Prolactin Test?
A prolactin test measures the amount of a hormone called prolactin you have in your blood. The hormone usually rises if a woman is pregnant or has just given birth to help produce breast milk.