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 250 g (8 oz) 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:	Jan Nissl, RN, BS Sydney Youngerman-Cole, RN, BSN, RNC	Last Updated: November 21, 2006
Medical Review:	Patrice Burgess, MD - Family Medicine Andrew Swan, MD, CCFP, FCFP - Family Medicine
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