Creatinine Test - part of the Comprehensive Metabolic Panel

The creatinine blood test measures the level of creatinine in the blood. This test is done to see how well your kidneys are working.

Creatinine can also be measured with a urine test.

This test is part of Cardio-Med's physical exam.

How to Prepare for the Test

Your physician may tell you temporarily to stop taking certain medicines that can affect the test. These medicines include:

Why the Test is Performed

Creatinine is a chemical waste product of creatine. Creatine is a chemical made by the body and is used to supply energy mainly to muscles.

This test is done to see how well your kidneys work. Creatinine is removed from the body entirely by the kidneys. If kidney function is not normal, the creatinine level in your blood will increase. This is because less creatinine is released through your urine.

Normal Results

A normal result is 0.7 to 1.3 mg/dL for men and 0.6 to 1.1 mg/dL for women.

Women usually have a lower creatinine level than men. This is because women usually have less muscle mass than men. Creatinine level varies based on a person's size and muscle mass.

What Abnormal Results Mean

A higher-than-normal level may be due to:

A lower than normal level may be due to:

There are many other conditions for which the test may be ordered, such as high blood pressure, diabetes, or medicine overdose.


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Serving Chicago, IL and all of the Chicago northwest suburbs, southeastern Wisconsin and northwestern Indiana.


Adapted from the U.S. National Library of Medicine, National Institutes of Health

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