Uric Acid, Urine, 24-hour

Message

Sendout, Mayo test code: URCU

Test Code

LAB841

Alias/See Also

Uric Acid, 24 Hr
URCU

CPT Codes
84560

Preferred Specimen

5 mL urine collected from a 24-hour urine container

Minimum Volume

1 mL

Other Acceptable Specimens

URINE PRESERVATIVE COLLECTION OPTIONS

Note: The addition of preservative or application of temperature controls must occur within 4 hours of completion of the collection.

Ambient	No
Refrigerate	OK
Frozen	OK
50% Acetic Acid	No
Boric Acid	Preferred
Diazolidinyl Urea	OK
6M Hydrochloric Acid	No
6M Nitric Acid	No
Sodium Carbonate	OK
Thymol	OK
Toluene	No

Instructions

1. Collect urine for 24 hours.
2. Refrigerate specimen within 4 hours of completion of 24-hour collection.

Transport Container

Plastic, 5 mL tube or a clean, plastic aliquot container with no metal cap or glued insert

Transport Temperature

Refrigerated

Specimen Stability

Refrigerated (preferred): 14 days
Frozen: 30 days
Ambient: 7 days

Reject Criteria (Eg, hemolysis? Lipemia? Thaw/Other?)

All specimens will be evaluated at Mayo Clinic Laboratories for test suitability.

Methodology
Uricase

FDA Status
Approved

Setup Schedule

Monday through Sunday

Report Available

1-3 days

Limitations

High levels of bilirubin and ascorbic acid may interfere with measurement.

Reference Range

Included with report

Clinical Significance

Assessment and management of patients with kidney stones, particularly uric acid stones

Performing Laboratory
Mayo Clinic Laboratories, Rochester, Minnesota

Additional Information
Uric Acid, 24 Hour, Urine

The CPT Codes provided in this document are based on AMA guidelines and are for informational purposes only. CPT coding is the sole responsibility of the billing party. Please direct any questions regarding coding to the payor being billed. Any Profile/panel component may be ordered separately. Reflex tests are performed at an additional charge.