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Creatinine

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Also known as: Creat; Blood Creatinine; Serum Creatinine; Urine Creatinine
Formal name: Creatinine

At a Glance

Why Get Tested?

To determine if your kidneys are functioning normally and to monitor treatment for kidney disease

When to Get Tested?

Routinely as part of a comprehensive or basic metabolic panel; when your doctor suspects that you are suffering from kidney dysfunction or when you are acutely or chronically ill with a condition that may affect your kidneys and/or be worsened by kidney dysfunction; at intervals to monitor treatment for kidney disease or kidney function while on certain medications

Sample Required?

A blood sample drawn from a vein in your arm and/or a 24-hour urine sample

Test Preparation Needed?

You may be instructed to fast overnight or refrain from eating cooked meat; some studies have shown that eating cooked meat prior to testing can temporarily increase the level of creatinine.