Geisinger Medical Laboratories/Geisinger Proven Diagnostics Test Catalog

Order Display Name: Geisinger Epic Procedure Code Or ID CPT Code:  


Geisinger Epic Procedure Code: LAB3218         Geisinger Epic ID: 41921

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:

Specimen processing instructions:
Allow serum to clot. Centrifuge to separate serum or plasma within 2 hours of collection. Specimen must be processed cold. Place specimen on ice. Deliver to testing area and assay immediately.
Off-campus lab or non-testing performing site: Specimen should be sent as frozen serum aliquot. Analysis should be done immediately, or as soon as frozen specimen is thawed, and mixed well upon receipt. 
Transport temperature:
Specimen stability:
Refrigerated: 7 days. Frozen: 6 months.
Rejection criteria:
Stability limits exceeded.

Reference interval:
Female: 2.4-5.7 mg/dL; Male: 3.4-7.0 mg/dL
CPT code(s):
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.
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: 12/14/2022

Performing Locations

Geisinger Medical Center

Performing laboratory: Automated Chemistry
Technical Lead: Megan Woodruff Jared Shepherd
Frequency: Daily, all shifts
Performed STAT? Yes

Geisinger Wyoming Valley Medical Center

Performing laboratory: ATL+
Technical Lead: Danielle Mostowski    
Frequency: Daily, all shifts    
Performed STAT? No

Geisinger Community Medical Center

Performing laboratory: Chemistry
Technical Lead: Ann Mack, Deborah Dempsey  
Frequency: Daily, all shifts    
Performed STAT? Yes

Geisinger Lewistown Hospital

Performing laboratory: Chemistry
Technical Lead: Jane Kifer  
Frequency: Daily    
Performed STAT? Yes
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