Name: Uric Acid for Patients on Rasburicase
Test Name: Uric Acid for Patients on Rasburicase
Health Link Test Code: HCRASURC
LIS Test Code: RASURC
CPT Code(s): 84550
Days Performed: Daily, 24 hours.
In-Lab Turnaround Time: 2 hours.
Stat In-Lab Turnaround Time: 1 hour.
Collection Container: Green cap with yellow ring (PST)
Also Acceptable: Green top
Sample must be drawn in a pre-chilled tube. Place sample on ice or coolant pack immediatley after drawing.
Collection Volume: 1 mL
Pediatric Collection Volume: 0.4 mL
Sample Analyzed: Plasma
Testing Volume: 0.5 mL
Pediatric Testing Volume: 0.2 mL
Centrifuge immediately. Transfer cell free plasma to plastic vial. Refrigerate.
Transport specimen with coolant pack to UWHC Hospital Laboratory immediately. Transport with coolant pack if coming from clinic location. Specimen must be received by laboratory within 4 hours of collection.
Samples greater than 4 hours old when received by the UWHC Hospital Laboratory are not acceptable.
|0-4 years||2.0-5.5||0-4 years||2.0-5.5|
|5-11 years||3.0-6.0||5-10 years||2.8-6.0|
|12-14 years||3.2-7.5||11-17 years||2.8-6.6|
|15 years and up||3.5-8.0||18 years and up||2.6-6.0|
Interpretation Type: Reference Interval
Must be analyzed within 4 hours of collection. Rasburicase (Elitek) will cause enzymatic degradation of uric acid within blood allowed to sit at room temperature, resulting in low uric acid levels. Sample must then be redrawn.
As per discussion with the UWHC Pharmacy and the manufacturer of rasburicase, this special collection procedure can be discontinued 4 days after the last dose of rasburicase.