Creatinine and Creatinine Clearance

Blood Creatinine

How It Feels

Blood test

The blood sample is taken from a vein in your arm. An elastic band is wrapped around your upper arm. It may feel tight. You may feel nothing at all from the needle, or you may feel a quick sting or pinch.

Urine test

There is no pain while collecting a 24-hour urine sample.

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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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