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UW Health SMPH
American Family Children's Hospital

UW Hospital and Clinics Lab Test Directory

Test Name: Uric Acid

Test Code(s): URIC

CPT Code(s): 84550

Methodology: Uricase

Days Performed: Daily, 24 hours.

Turnaround Time: Stat: 1 hour.
Routine: 4 hours.


Specimen Requirements

Specimen: Blood

Collection Instructions: IMPORTANT:  For patients receiving Elitek (Rasburicase), please follow instructions listed in the Test Directory entry "Uric Acid for Patients on Rasburicase".

Collection Container: Preferred: Green cap with yellow ring (PST)
Also Acceptable: Green top, Red cap with yellow ring (SST), Red top

Collection Volume: Preferred: 1 mL
Pediatrics: 0.4 mL

Sample Analyzed: Plasma or serum

Volume Required: Preferred: 0.5 mL
Pediatrics: 0.2 mL

Specimen Processing: Centrifuge.  If a complete barrier has not formed, transfer cell-free plasma/serum to plastic vial.  Refrigerate.

Specimen Transport: Transport specimen to UWHC Core Laboratory (B4/220). Transport with coolant pack if coming from outreach location.

Stability: Ambient: 24 hours
Refrigerated: 5 days
Frozen: 6 months


Interpretation

Reference Interval:
 Male:    Female:  
 Age  mg/dL  Age  mg/dL
 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  2.5-6.0
       

                 

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