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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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Heart Failure and the BNP Blood Test
If you have heart failure, you may have heard of a BNP blood test. But what is it?
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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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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 an Ammonia Test?
Ammonia is a powerful household cleaner. It’s also a waste product made by your body. Learn why your doctor might order an ammonia test and what your results could mean.