Laboratory Medicine

Test catalogue

Uric Acid (Urate), 24Hrs Urine
Test name Uric Acid (Urate), 24Hrs Urine
Specimen Type / Requirements Container Type = 24 hour plain container bottle Minimum Testing 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 Routine
Reference Value 1.5 - 4.5 mmol/d
Test Code 24URI	Methodology Spectrophotometric (Enzymatic/Colorimetric)
Testing Location SMH-Biochemistry	Other Information Last Updated: September 26, 2019

Uric Acid (Urate), 24Hrs Urine

Test name

Uric Acid (Urate), 24Hrs Urine

Specimen Type / Requirements

Container Type = 24 hour plain container bottle

Minimum Testing 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

Routine

Reference Value

1.5 - 4.5 mmol/d

Test Code

24URI

Methodology

Spectrophotometric (Enzymatic/Colorimetric)

Testing Location

SMH-Biochemistry

Other Information

Last Updated: September 26, 2019