Creatinine and Creatinine Clearance

Blood Creatinine

How To Prepare

Do not do any strenuous exercise for 2 days (48 hours) before having creatinine tests.

Do not eat more than 8 oz (227 g) of meat, especially beef, or other protein for 24 hours before the blood creatinine test and during the creatinine clearance urine test.

It is important to drink enough fluids during the 24-hour urine collection but do not drink coffee and tea. These are diuretics that cause your body to pass more urine.

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Author:	Monica Rhodes	Last Updated: August 12, 2008
Medical Review:	E. Gregory Thompson, MD - Internal Medicine Tushar J. Vachharajani, MD, FASN, FACP - Nephrology
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