Urate (Urine)

Testing Laboratory

Department

Chemical Pathology

Delphic Registration Code (Alpha Code)

UURA

Test Code (Numeric Code)

0244

Laboratory Handling

Phlebotomy

A. 24h urine collection with thymol preservative (preferred) OR no preservative (refrigerate during collection)
B. Spot urine (minimum 10 mL)

Sample Stability

4 days at 20-25 oC (upon NaOH addition)

Synonyms

Urate Fractional Excretion, Uric acid- Urine

Turnaround Time

3 hours

Specimen Type

• 24hr Urine
• Urine

Specimen Requirements

Tube/Container Type:

Preferred

• 24hr Urine Container

Acceptable

• BD Urine Tube (no additive)

Minimum Sample Volume (ml)

10

Paediatric Specimen Requirements

Tube/Container Type:

Preferred

• 24hr Urine Container

Acceptable

• BD Urine Tube (no additive)

Minimum Sample Volume (ml)

10

Test Method

Performed in: LabPlus Automation
Principle : Enzymatic / Colorimetric
Reagents: Roche assay
Analyser: Roche Cobas

Uncertainty of Measurement

5%

References
1. Fenske, W., S. Stork, et al. (2008). "Value of fractional uric acid excretion in differential diagnosis of hyponatremic patients on diuretics." J Clin Endocrinol Metab 93 (8): 2991-2997.
2. Mayo Medical Laboratories Test calalog ( http://www.mayomedicallaboratories.com/test-catalog/ )
3. Matos, V., G. Van Melle, et al. (1999). "Urinary oxalate and urate to creatinine ratios in a healthy pediatric population." Am J Kidney Dis 34 (2): e1.

Contact Information