24-Hour Urinary Creatinine Clearance
This test measures how well your kidneys filter waste products, including creatinine, over a full day. It helps assess kidney function and detect early signs of kidney disease.
["This test helps doctors check how well your kidneys are working by tracking waste removal over time."]
Key facts at a glance
- LOINC
- 53433-9
- Short code
- CK Dial fld-cCnc
- Synonyms
- CK Dial fld-cCnc
- Category
- chemistry
- Sample
- serum
- Container
- Red-top tube (SST)
- Units
- N/A
- Ref low
- 22
- Ref high
- 198
- Critical range
- — – 10000 N/A
- Fasting
- false
- Population
- adult
- Sex
- all
- Age range
- 18–65 years
- CPT
- 82553
- Specimen volume
- 5 mL
- Stability
- Room temperature: 4h, Refrigerated: 24h, Frozen: 7d
- Hemolysis max
- 500
- Lipemia max
- 1000
- Icterus max
- 500
- TAT
- 4–24 hours
- Order
- routine
Why Is This Test Done?
Your doctor may order this test if they suspect kidney problems, such as chronic kidney disease (CKD), kidney stones, or other conditions affecting how well your kidneys remove waste from your blood. It’s also used to monitor kidney function in people with diabetes, high blood pressure, or a history of kidney issues.
How Is the Test Performed?
You’ll collect all your urine for a full 24-hour period in a special container. Your doctor will provide instructions on timing and storage. After collection, the urine is sent to a lab for analysis.
What Do the Results Mean?
The results show how much creatinine your kidneys filter each minute. Lower than expected values may indicate kidney problems, while higher values could suggest dehydration or other conditions affecting fluid balance.
Common Causes of Abnormal Results
Abnormal results can stem from kidney disease, blockages in the urinary tract, dehydration, or certain medications. Your doctor will review your results in the context of your overall health.
Reference range
Adult males: 22-198 U/L; Females: 22-198 U/LN/A
No special preparation required. Inform provider of any chest pain or symptoms.
Clinical interpretation
How abnormal results are interpreted and what conditions they suggest.
This test is critical for diagnosing and managing kidney function. It helps doctors track progress in kidney-related conditions and adjust treatments as needed. Early detection of kidney issues can improve long-term outcomes.
Short name
Creatinine Clearance (24-hour urine)
Frequently asked questions
What does a low creatinine clearance mean?
How often should I get this test?
Can I eat or drink anything before the 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