Geisinger Medical Laboratories Test Catalog

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


Geisinger Epic Procedure Code: LAB2616             Geisinger Epic ID: 6353

Specimen type:
Preferred collection container:
Specimen required:
2 mL aliquot of serum; minimum 0.5 mL.
Patient preparation:
Preferred specimen is 8 to 10 hours after oral dose.

Specimen processing instructions:
Allow serum to clot. Centrifuge to separate serum. Specimen should be separated from cells within four (4) hours after collection. 
Transport temperature:
Refrigerated (preferred). Room temperature also acceptable.
Specimen stability:
Room temperature: 1 day. Refrigerated: 7 days. Frozen: 6 months.
Rejection criteria:
Stability limits exceeded. Lithium heparin plasma.

Reference interval:
0.6 - 1.2 mmol/L.
Critical values/courtesy alerts:
Above 1.5 mmol/L.
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:
Lithium level.
Spectrophotometric (Colorimetric)
Clinical significance:
Lithium is administered to control manic-depressive disorders and measured to monitor appropriate therapeutic ranges.
Doctoral Director(s:)
Hoi-Ying Elsie Yu, PhD, DABCC, FADLM
Sheng-Ying (Margaret) Lo, PhD, DABCC    
Review Date: 12/14/2022

Performing Locations

Geisinger Medical Center

Performing laboratory: Automated Chemistry
Technical Lead: Megan Woodruff
Frequency: Daily, Monday-Sunday
Performed STAT? Yes

Geisinger Wyoming Valley Medical Center

Performing laboratory: ATL+
Technical Lead: Danielle Mostowski    
Frequency: Daily, Monday-Sunday    
Performed STAT? Yes

Geisinger Community Medical Center

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

Geisinger South Wilkes-Barre

Technical lead: Bernadette Johnson    
Frequency: Daily, all shifts    
Performed STAT? Yes
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