Serum or plasma concentration of a substance related to major xanthine metabolism (e.g., xanthine oxidase activity or metabolite levels)
This test measures components involved in the breakdown of purines, such as xanthine, into uric acid. It may help assess metabolic or enzyme function linked to xanthine metabolism.
["This test evaluates metabolic pathways that process purines, which can be important for conditions affecting uric acid production or enzyme activity."]
Key facts at a glance
- LOINC
- 1250-0
- Short code
- Maj XM SerPl-Imp
- Synonyms
- Maj XM SerPl-Imp
- Category
- chemistry
- Sample
- serum
- Container
- Red-top tube (SST)
- Units
- N/A
- Fasting
- false
- Population
- adult
- Sex
- all
- Age range
- 18–65 years
- 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
What Is Measured?
This test includes measurements of key substances in the xanthine metabolism pathway, such as xanthine oxidase activity or specific metabolites like xanthine and hypoxanthine. The results may reflect how efficiently your body converts these compounds into uric acid.
Why Is This Test Done?
Your healthcare provider may order this test if you have symptoms or conditions linked to abnormal purine metabolism, such as gout, certain metabolic disorders, or suspected enzyme deficiencies. It can also be part of broader metabolic evaluations.
Preparation and Sample Collection
No special preparation is typically required. A blood sample is drawn from a vein in your arm. If you’re on medications or have certain conditions, let your provider know before the test.
What to Expect After the Test
Results may take several days to weeks to be processed. Your provider will discuss the findings with you, explaining what they mean for your health. Follow-up may include additional tests or lifestyle adjustments if needed.
Clinical interpretation
How abnormal results are interpreted and what conditions they suggest.
◆Associated findings1
Short name
Major Xanthine Metabolism Profile (Serum/Plasma)
Frequently asked questions
Abnormal results could indicate metabolic disorders, enzyme deficiencies, or conditions affecting purine metabolism. For example, elevated levels might suggest overproduction of uric acid, while low levels could point to impaired enzyme function. Always consult your healthcare provider for interpretation.
Results can vary depending on the lab and testing methods used. Typically, you may receive results within 1 to 2 weeks, but some labs provide preliminary findings sooner. Your provider will guide you on the timeline for your specific test.
No special diet or fasting is required for this test. However, if you have any dietary restrictions or are on medications, inform your healthcare provider before the test to ensure accurate results.
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