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Test Code LAB4212 URIC ACID

Specimen Type

Preferred Sample: Lithium Heparin Plasma (Mint Green Top, Dark Green Top)
Alternative Sample: Serum (SST, Gold, Corvac, Tiger, Red Top Tube)

Specimen Volume

1.0 mL

Minimum Volume

0.5 mL

Turnaround Time

STAT: 1 hour
Routine: 4 hours

Test Schedule

Daily and STAT

Sample Stability

Room Temp: 8 hours
Refrigerated: 3 days
Frozen: 3 months

Method

Colorimetric

Reference Ranges

Uric Acid, mg/dL
  Male Female
0-15 Days 2.8 - 12.7
15 Days - 1 Year 1.6 - 6.3
1-12 Years 1.8 - 4.9
12-19 Years 2.6 - 7.6 2.6 - 5.9
>19 Years 3.5 - 7.2 2.6 - 6.0

Test Components

Uric Acid, mg/dL

CPT Codes

84550

Notes

Tumor Lysis Syndrome is a life-threatening condition often caused by a chemotherapeutic treatment that causes a massive release of intracellular contents into the bloodstream (mainly uric acid, potassium & phosphate). Rasburicase (Elitek) is a drug used to manage elevated uric acid levels. In Rasburicase- treated patients, uric acid is vigilantly monitored to verify efficacy. Because this drugs activity continues post-collection (in vitro), patient samples must be collected in pre-chilled tubes and rapid sample transport on ice to avoid falsely low results.