24-Hour Urinary Creatinine Clearance
This test measures how well your kidneys filter waste products, specifically creatinine, over a full day using your urine.
["Assesses kidney function by tracking creatinine removal from your bloodstream in urine over 24 hours."]
Key facts at a glance
- LOINC
- 57784-1
- Short code
- DHEA pre hi Dex 24h Ur-mRate
- Synonyms
- DHEA pre hi Dex 24h Ur-mRate
- Category
- chemistry
- Sample
- urine
- Container
- Sterile urine container
- Units
- N/A
- Ref low
- 135
- Ref high
- 980
- Fasting
- false
- Population
- adult
- Sex
- all
- Age range
- 18–65 years
- CPT
- 82626
- Specimen volume
- 10 mL
- Stability
- Room temperature: 2h, Refrigerated: 24h, Frozen: 7d
- Hemolysis max
- 0
- Lipemia max
- 0
- Icterus max
- 0
- TAT
- 4–24 hours
- Order
- routine
Why This Test Is Done
Your doctor may order this test to evaluate kidney function, diagnose kidney disease, or monitor kidney health in people with conditions like diabetes, high blood pressure, or chronic kidney disease. It helps determine how well your kidneys are filtering waste products from your blood.
How the Test Is Performed
You’ll collect all urine for 24 hours in a special container. The test measures the amount of creatinine in your urine and compares it to your blood creatinine levels to calculate clearance. Proper timing and accurate collection are critical for accurate results.
What to Expect Before the Test
No special preparation is needed, but you should drink enough fluids to produce urine throughout the day. Avoid medications that might affect kidney function unless approved by your doctor.
What the Results Mean
Results are typically expressed as a clearance rate (e.g., mL/min or mL/hr), which helps assess kidney function. Lower clearance may indicate kidney damage or disease, while higher values may suggest overhydration or other conditions.
Reference range
NCBI: DHEA-S Male 135-980 µg/dL; Female 30-260 µg/dLN/A
No special preparation usually required. Stay well hydrated. Inform your healthcare provider of all medications and supplements you are taking.
Clinical interpretation
How abnormal results are interpreted and what conditions they suggest.
This test is crucial for diagnosing and monitoring kidney disease, as creatinine clearance reflects how efficiently your kidneys filter waste. Abnormal results may signal impaired kidney function, requiring further evaluation or treatment adjustments.
Short name
None
Frequently asked questions
What is creatinine clearance, and how is it different from a standard blood creatinine test?
Can I drink alcohol before this test?
How long does it take to get the results of this test?
Sources
- 1
- 2Lab Tests OnlineSource
- 3
Click any link to access the full source. PubMed Central (PMC) links provide free full-text access.
This information is for educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment.
This content is for general informational and educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment. Always seek the guidance of a qualified healthcare provider with any questions you have about a medical condition, and never disregard professional medical advice or delay seeking it because of something you read here.
If you think you may have a medical emergency, call your local emergency number or go to the nearest emergency department immediately.
Medically reviewed by WellAlly Editorial Team Last reviewed August 17, 2026. · Read our editorial policy