Mass concentration of purine metabolites in urine (specifically, xanthine and hypoxanthine)
This test measures certain waste products from your body’s breakdown of purines, which are compounds found in foods and produced naturally in your cells. It helps assess how well your kidneys are filtering these substances.
["This test may help diagnose or monitor kidney function or conditions affecting purine metabolism."]
Key facts at a glance
- LOINC
- 78855-4
- Short code
- m-CPP Ur-mCnc
- Synonyms
- m-CPP Ur-mCnc
- Category
- chemistry
- Sample
- urine
- Container
- Sterile urine container
- Units
- N/A
- 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
Why This Test Might Be Ordered
Your healthcare provider may recommend this test if you have symptoms of kidney problems, such as frequent urination, swelling, or fatigue. It could also be part of a broader evaluation for conditions like gout, kidney stones, or metabolic disorders linked to purine metabolism.
What to Expect Before the Test
No special preparation is needed. You’ll provide a urine sample, typically collected over a 24-hour period, though some labs may use a single random sample. Drink plenty of water to ensure adequate urine volume if instructed.
What the Results Mean
Higher-than-normal levels may indicate kidney issues or conditions that increase purine production, such as certain cancers or genetic disorders. Lower levels might suggest dehydration or other metabolic factors. Results are interpreted in context with your overall health and symptoms.
Common Conditions Monitored
This test is sometimes used to monitor kidney function, especially in cases of suspected nephrolithiasis (kidney stones), chronic kidney disease, or metabolic disorders like Lesch-Nyhan syndrome, which affects purine metabolism.
Clinical interpretation
How abnormal results are interpreted and what conditions they suggest.
◆Associated findings1
Short name
Urine purine metabolite mass concentration
Frequently asked questions
What does a high or low result mean?
Does diet affect this test?
How often is this test repeated?
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 16, 2026. · Read our editorial policy