Infectious Disease

Creatinine

Normal Range
Male: 0.7 - 1.3 mg/dL; Female: 0.6 - 1.1 mg/dL
Sample Type
Standard
Fasting
No
Unit
mg/dL

Creatinine is a byproduct of creatine phosphate metabolism in muscle and is excreted primarily by glomerular filtration in the kidneys. In a COVID-19 Bio Chemistry panel, it serves as a vital marker for monitoring Acute Kidney Injury (AKI), which is a common complication in severe viral infections. Elevated levels indicate a reduction in the Glomerular Filtration Rate (GFR), signaling renal distress or failure which may necessitate adjustments in drug dosing.

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Interactive
mg/dL

Enter your lab result to see where you stand compared to the standard reference range.

Why Context Matters

Creatinine levels are heavily influenced by non-renal factors including muscle mass, age, and dietary protein intake. Extremely muscular individuals or those on creatine supplements may have high 'normal' levels, while elderly or malnourished patients may have deceptively 'normal' levels despite significant renal impairment.

Lab ranges are statistical averages, not biological laws. "Normal" for a 20-year-old male isn't normal for a 60-year-old female.

Clinical References

Source-of-truth databases and clinical guidelines for Creatinine:

Research & Guidelines

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DR

Medically Reviewed by Dr. Binoy Babu, MBBS

Board Certified Doctor • 10+ Years Clinical Experience

Dr. Babu is a practicing physician dedicated to empowering patients with clear, actionable medical information. He founded 2opi to bridge the gap between complex lab reports and patient understanding, ensuring everyone has access to a reliable second opinion.

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