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Uric Acid, Urine
MessageReference interval for random urine has not been established.
Test Code
3280
Preferred Specimen
24-hour urine. Refrigerate specimen during collection. Also acceptable: Random urine, use test code 3275 - Urine Uric Acid Random.
Minimum Volume
Refrigerated.
Instructions
Urine pH must be adjusted to greater than 8.0. If pH is less than or equal to 8.0, adjust pH to greater than 8.0 by adding 5 percent NaOH. Mix well and allow entire 24-hour collection to stand for 15 minutes. Recheck pH and readjust if necessary. Transfer one 3 mL aliquot from a well-mixed 24-hour collection a Transport Tube. (Min: 0.5 mL) Record total volume, collection time interval, and pH on transport tube or aliquot tube and on test request form.
Transport Temperature
Refrigerated.
Specimen Stability
Ambient: 4 days; Refrigerated: 4 days; Frozen: 2 weeks
Reject Criteria (Eg, hemolysis? Lipemia? Thaw/Other?)
Specimens with pH less than 8.0. Urine collected with acid.
Methodology
Spectrophotometry
Setup Schedule
Sun-Sat
Report Available
Within 24 hours
