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    Creatinine

    Creatinine

    Creatinine is a waste product formed by the breakdown of a substance (creatine) important for converting food into energy (metabolism). The creatinine is filtered out of the blood by the kidneys and then passed out of the body in urine.

    If the kidneys are damaged and can't function normally, the amount of creatinine in the urine decreases while the amount of creatinine in the blood increases.

    Current as of: November 20, 2015

    Author: Healthwise Staff

    Medical Review: E. Gregory Thompson, MD - Internal Medicine & Adam Husney, MD - Family Medicine & Michael Mallea, MD - Nephrology

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