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.
Blood Testing for Allergies
Blood testing for allergies is sometimes performed instead of skin tests. The experts at WebMD tell you why.
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.
Creatinine and Creatinine Clearance Blood Tests
WebMD explains how creatinine and creatinine clearance tests are used to measure kidney function.
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.