Geisinger Medical Laboratories/Geisinger Proven Diagnostics Test Catalog

Test Name: Sunquest Test Code Epic Procedure Code Or ID CPT Code:  

URIC ACID, RASBURICASE USER

ORDERING INFORMATION:
Sunquest Test Code:
URICTX      Geisinger Epic Procedure Code: 84550.01         Geisinger Epic ID: 41921

SPECIMEN COLLECTION
Specimen type:
Plasma or Serum
Preferred collection container:
Specimen required:
2 mL of serum or plasma; minimum 0.2 mL.
Special notes:
Place tube directly into an ice slurry. See processing instructions below.
Patient preparation:
None.

SPECIMEN PROCESSING
Specimen processing instructions:
Centrifuge at 1100-2000 g for a minimum of 10 minutes. (cold). Specimen must be processed cold. Place specimen on ice. Deliver to testing area and assay immediately.
Off-campus lab: If specimens are sent from GRL or non-hospital sites, should be sent as separated frozen serum. Analysis of URICTX should be done immediately or as soon as frozen specimen is thawed and mixed well. 
Transport temperature:
Frozen.
Specimen stability:
Refrigerated: 7 days. Frozen: 6 months.
Rejection criteria:
Stability limits exceeded.

TEST DETAILS
Reference interval:
Female: 2.4-5.7 mg/dL; Male: 3.4-7.0 mg/dL
CPT code(s):
84550
Note: The billing party has sole responsibility for CPT coding.  Any questions regarding coding should be directed to the payer being billed.  The CPT codes provided by GML are based on AMA guidelines and are for informational purposes only.
Test includes:
Uric acid.
Methodology:
Spectrophotometric (Colorimetric)
Clinical significance:
In patient who has tumor lysis syndrome, rasburicase may be used to manage the elevation of uric acid. Keeping the specimen cold will prevent breakdown of uric acid by rasburicase ex vivo. This allows for more accurate measurement of the uric acid level in vivo.
Doctoral Director(s:)
Hoi-Ying Elsie Yu, PhD, DABCC
Sheng-Ying (Margaret) Lo, PhD, DABCC    
Review Date: 11/05/2018

Performing Locations

Geisinger Medical Center

Performing laboratory: Automated Chemistry
Technical Lead: Mariana Moyer, Jared Shepherd
Frequency: Daily, all shifts
Performed stat? Yes

Geisinger Wyoming Valley Medical Center

Performing laboratory: ATL+
Technical Lead: Sarah McGowan    
Frequency: Daily, all shifts    
Performed stat? No

Geisinger Lewistown Hospital

Performing laboratory: Chemistry
Technical Lead: Melissa Forsythe  
Frequency: Daily    
Performed stat? Yes
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*GMC - Geisinger Medical Center; GWV - Geisinger Wyoming Valley Medical Center; GSACH - Geisinger Shamokin Area Community Hospital; GBH - Geisinger Bloomsburg Hospital;
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GSWB - Geisinger South Wilkes-Barre