Uric Acid, 24-Hour Urine with Creatinine
Test Code
Clinical Significance
Uric Acid, 24-Hour Urine with Creatinine - Urine uric acid may supplement serum uric acid testing when trying to identify conditions in which there is alteration of uric acid production or excretion, e.g., gout, leukemia, renal disease. The amount of uric acid excreted may be useful in treating asymptomatic hyperuricemia. Measurement of urine uric acid is important in the investigation of urolithiasis.
Test Resources
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Test Details
Methodology
Reference Range(s)
Preferred Specimen(s)
10 mL urine aliquot from a well-mixed, 24-hour urine collection - no preservative
Collection Instructions
Do not acidify the urine. Please aliquot for uric acid testing prior to addition of any acid for those tests requiring preservative.
Do not include first morning specimen; collect all subsequent voidings. The last sample collected should be the first morning specimen voided the following morning at the same time as the previous morning’s first voiding. Specify 24-hour total volume on container and test requisition.
Transport Container
Plastic urine container
Transport Temperature
Room temperature
Setup Schedule, Minimum Volume, Specimen Stability, Reject Criteria
Do not include first morning specimen; collect all subsequent voidings. The last sample collected should be the first morning specimen voided the following morning at the same time as the previous morning’s first voiding. Specify 24-hour total volume on container and test requisition.