A B C D E F G H I J K L M N O P Q R S T U V W X Y Z # |
Uric Acid, 24-Hour Urine without Creatinine
Test Code11321
Alias/See Also
LAB841
CPT Codes
84560
Includes
CPT code 81050 may be added at an additional charge for volume measurement
Preferred Specimen
10 mL urine aliquot from a well-mixed, 24-hour urine collection - no preservative
Minimum Volume
2 mL
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 total volume and duration of collection on container and test requisition.
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 total volume and duration of collection on container and test requisition.
Transport Container
Plastic urine container
Transport Temperature
Room temperature
Specimen Stability
Room temperature: 13 days
Refrigerated: 13 days
Frozen: 28 days
Refrigerated: 13 days
Frozen: 28 days
Reject Criteria (Eg, hemolysis? Lipemia? Thaw/Other?)
Acid preserved urine
Methodology
Spectrophotometry (SP)
Setup Schedule
Tues, Fri
Report Available
4-9 days
Reference Range
Male | 120-820 | mg/24 h |
Female | 65-630 | mg/24 h |
Clinical Significance
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.
Performing Laboratory
Quest Diagnostics Nichols Institute-San Juan Capistrano, CA |
33608 Ortega Highway |
San Juan Capistrano, CA 92675-2042 |