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Laboratory Medicine

Test catalogue

Uric Acid (Urate), 24Hrs Urine

Test name

Uric Acid (Urate), 24Hrs Urine

Plain 24 bottle Specimen Type / Requirements

Container Type = 24 hour plain container bottle

Minimum Volume = 5 mL urine from mixed urine Collection

Specimen Handling

Collection Instructions: 24h urine collected in plain container without preservative. Ensure collection bottle is labelled correctly. Keep the collected urine refrigerated if possible and return to lab ASAP.

Write your "start" and "end" date and time of collection on the collection label or requisition.

Stability: Urine stable for 4 days at room temperature or refrigerated and frozen at -15°C to -20°C for 2 weeks

Transportation: Send sample to SMH core lab as soon as possible.

Laboratory Staff Instructions: 24 h urine collected without preservative. pH must be adjusted to > 8.0. If pH is less than or equal to 8.0, adjust pH to > 8.0 by adding 1 M NaOH. Mix well and allow entire 24-hour collection to stand for 15 minutes. Recheck pH and readjust if necessary

Sample Rejection Criteria: Urine collected with acid / alkaline or leaking specimen will be rejected

Required Documentation

Turnaround Time (TAT)

2 Days Except Weekends


Test Utilization


Reference Value

1.5 - 4.5 mmol/d

Test Code



Spectrophotometric (Enzymatic/Colorimetric)

Testing Location


Other Information

Last Updated: September 26, 2019