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What is normal creatinine?

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Quick Answer

Normal creatinine levels in the blood are between 0.6 and 1.3 milligrams per deciliter, according to Mayo Clinic. These numbers may vary due to age and gender and among processing laboratories.

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Full Answer

High creatinine levels in the blood are an indicator of kidney malfunction, but temporary spikes can be caused by dehydration or low blood levels, explains Mayo Clinic. Eating large quantities of meat or taking creatinine supplements may also cause elevated amounts of the waste product in blood test results. In addition, heavily muscled individuals often have higher than average levels of creatinine. Abnormal serum creatinine levels are confirmed with additional blood and urine tests.

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