Citric Acid, Urine
Also known as: CITRIC U
Use
The Citric Acid, Urine test is used to evaluate and monitor patients with nephrolithiasis, or kidney stone disease. It can help in assessing the risk for stone formation by measuring the levels of citric acid. Low urine citrate levels are associated with an increased risk of calcium stone formation, while higher levels indicate a reduced risk. For patients with known kidney stones, monitoring citric acid levels can guide dietary and therapeutic actions to prevent the recurrence of stones.
Special Instructions
Not provided.
Limitations
This test is intended for use in a clinical laboratory setting and should not replace careful clinical assessments and considerations by healthcare providers. Variations in urine collection time or total volume can affect the results, necessitating the potential use of ratios to urine creatinine concentration for interpretive accuracy. The test has not been cleared or approved by the FDA, and its performance characteristics were determined by ARUP Laboratories. Results should be interpreted in the context of the overall clinical picture.
New York Approved
Methodology
Automated Analyzer (Clinical Chemistry)
Biomarkers
Citric Acid, Urine
AnalyteCreatinine, Urine
Analyte
Result Turnaround Time
1 day
Related Documents
For more information, please review the documents below
Specimen
Urine
Volume
4 mL
Minimum Volume
0.5 mL
Container
ARUP standard transport tube
Collection Instructions
Collect 24-hour urine and refrigerate. Adjust pH to ≤2 with 6M HCl. Record volume, time interval, and pH on transport tube and form.
Storage Instructions
Refrigerated during collection.
Stability Requirements
| Temperature | Period |
|---|---|
| Room Temperature | 24 hours |
| Refrigerated | 2 weeks |
| Frozen | 1 month |
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