Urine Creatinine
- Sample Type
- Urine (24h)
- Fasting
- No
- Unit
- mg/24h
Urine Creatinine measures the amount of creatinine (a byproduct of muscle metabolism) excreted in the urine over 24 hours. Within the context of a Creatinine Clearance Test, it is used as a denominator to calculate the Glomerular Filtration Rate (GFR). It helps clinicians determine if a 24-hour urine collection was 'complete' (since creatinine excretion is relatively constant) and is essential for diagnosing chronic kidney disease (CKD) and adjusting dosages for nephrotoxic drugs.
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Check Your Result
Enter your lab result to see where you stand compared to the standard reference range.
Why Context Matters
The most common source of error is an incomplete 24-hour collection (missing a void). High meat intake before the test or intense physical exercise can also cause temporary spikes that do not reflect true kidney function.
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 Urine Creatinine:
Official Sources
Research & Guidelines
- PubMed: Urine Creatinine Clinical GuidelinesNCBI / PubMed
Related Indicators
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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