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Test Code URIC Uric Acid LAB141

Important Note

If the patient is on Rasburicase, notify the laboratory. Rabuircase continues to be active in the patient's blood after phlebotomy. In order to stop its activation and attain an accurate measurement of Uric Acid level the specimen must be placed on ice to stop enzymatic activity.

Test Method

Timed Endpoint Method; Beckman DXC600

Performance

Testing is performed Monday through Sunday.

Routine orders: Typically completed within 4 hours after the
speicmen arrives at the testing site.

Expedite orders: Typically completed within 1 hour after the
specimen arrives at the testing site.

STAT orders: Typically completed within 30 minutes after
the specimen arrives at the testing site.

Useful For

Diagnosis and treatment of renal failure and monitoring patients
receiving cytotoxic drugs and a variety of other disorders,
including gout, leukemia, psoriasis, starvation and other wasting
conditions

Specimen Requirement

0.5 mL serum or plasma is required.

CPT Code Information

84550 Chemistry: Uric Acid; blood

Reference Values

Male: 4.8-8.7 mg/dL
Female: 2.6-8.0 mg/dL

LOINC Code Information

3084-1 Urate [Mass/Volume] In Serum Or Plasma

Additional Specimen Collection Information

Collect blood in a lithium heparin, green-top or red-top tube.
PST and SST (gel tubes) are acceptable.Place the specimen on ice if
it is indicated that the patient is on Rasburicase to stop
enzymatic activity post phlebotomy. Serum or plasma should be
separated from contact with the cells within 2 hours of collection.
Specimens not centrifuged within 4 hours of collection may be
rejected. Refrigerate the specimen if unable to assay within 8
hours of collection.