Urate and Creatinine, 24-Hour Urine
Measures uric acid and creatinine in urine collected over 24 hours to assess uric acid excretion and kidney function.
["This test shows how much uric acid and creatinine your kidneys excrete over a full day."]
Key facts at a glance
- LOINC
- 13820-6
- Short code
- Urate/Creat 24h Ur
- Synonyms
- Urate/Creat 24h Ur
- Category
- kidney
- Sample
- urine
- Container
- Sterile urine container
- Units
- N/A
- Ref low
- 3.5
- Ref high
- 7.2
- Fasting
- false
- Population
- adult
- Sex
- all
- Age range
- 18–65 years
- 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
What is this test?
This test measures uric acid, also called urate, and creatinine in all urine collected during a 24-hour period. Creatinine is a muscle breakdown product that is filtered by the kidneys and is commonly used to help evaluate kidney function.
Why might I need this test?
A clinician may order this test to evaluate uric acid excretion, investigate symptoms of gout or kidney stones, or monitor treatment for high uric acid. Measuring both substances over 24 hours can help show how the kidneys handle uric acid and how much creatinine is being released.
How is the test performed?
You usually begin collecting urine at a specific time and collect every urine sample for the next 24 hours. The samples are then brought to the laboratory, where they are combined and measured for urate and creatinine.
How do I prepare for the test?
Follow your clinician's collection instructions carefully and record the start and end times. If you were given dietary or medication instructions, follow them, and tell the laboratory if you missed a collection or spilled part of a urine sample.
Reference range
NCBI: Uric Acid Male 3.5-7.2 mg/dL; Female 2.5-6.8 mg/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.
High urine urate may occur with gout, uric acid kidney stones, high cell turnover, or certain medications and may support decisions about treatment. High urine creatinine can occur with increased muscle breakdown, while low levels may reflect reduced kidney filtration or dehydration. Results must be interpreted with the collection quality, diet, medications, symptoms, and other laboratory findings.
Short name
24-Hour Urine Uric Acid and Creatinine
Frequently asked questions
Why is urine collected for 24 hours instead of using one sample?
What if I forget to collect some urine during the 24 hours?
Does this test diagnose gout?
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