Uric Acid for Rasburicase

Message

Test measures uric acid level using regular laboratory uric acid analysis but requires strict temperature collection, transport and stability requirements to prevent in vitro degredation of uric acid.

Test Code

LAB6228

Alias/See Also

URASB

CPT Codes
84550

Includes

LOINC: 3084-1

Instructions

"Routine venipuncture. Draw blood in prechilled green top (sodium heparin) tube, Place immediately in ice water bath and send for URASB with chilled centrifugation (4°C). Chilled plasma must be maintained in an ice waterbath and tested within 4 hours or uric acid value will be falsely low."

Transport Temperature

Transport on Ice.

Specimen Stability

Refrigerate, stable 4 hours

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

Room Temperature specimen. Sample MUST be kept cold to reduce the in vitro enzymatic degredation
of Uric Acid by Rasburicase.

Methodology
Colorimetric:Hydrogen peroxide oxidizes a leuco dye in the presence of peroxidase to generate a colored dye by reflectance spectrometry.

Setup Schedule

"Daily
STAT"

Report Available

1 hour

Reference Range

Female: 2.5-6.2 mg/dL
Male: 3.5-8.5 mg/dL

Clinical Significance

Uric acid for Rasburicase measurement is used in the monitoring of rasburicase therapy for the treatment of hyperuricemia.

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.