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Test Code 105 Uric Acid

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.

Additional Codes

MLAB: URIC

PowerChart: Uric Acid

Epic: LAB141 Uric Acid

MA Cerner: Uric Acid.

Test Method

UCL: Timed Endpoint Method; Beckman DXC600/DXC880i

MA: Bichromatic Enzyme Technique; Siemens

Specimen Requirement

0.5 mL serum or plasma is required.

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.

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.

Reference Values

2.5-8.0 mg/dL

CPT Code Information

84550 Chemistry: Uric Acid; blood

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

LOINC Code Information

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

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