Geisinger Medical Laboratories Test Catalog

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


Geisinger Epic Procedure Code: LAB2246             Geisinger Epic ID: 54549

Specimen type:
Serum or plasma.
Preferred collection container:
Alternate Collection Container:
3.5 mL gold-top (serum separator) tube
3 mL green/yellow-top (plasma separator) tube
Specimen required:
Minimum 2.0 mL serum or plasma; minimum 1 mL.

Specimen processing instructions:
Allow to serum clot. Centrifuge to separate serum or plasma within 2 hours of collection. Remove serum from cells. 
Transport temperature:
Refrigerated (preferred) or room temperature.
Specimen stability:
Room temperature or refrigerated: 3 days.
Rejection criteria:
Stability limits exceeded.

Reference interval:
Cutoff concentration ethylene glycol: 10 mg/dL
Additional information:
For 5% of patients with history of chronic alcohol consumption, elevated result between 10 and 35 mg/dL may be expected due to high concentration of 2,3-butanediol. Propylene glycol is a known compound that interferes with this assay. Laboratory will notify the ordering provider if propylene glycol interference is suspected.
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:
Serum ethylene glycol.
Clinical significance:
Ethylene glycol screen is used to evaluate and monitor ethylene glycol toxicity. Ingestion of ethylene glycol can result in central nervous system depression (0.5-12 hrs. post ingestion), cardiopulmonary compromise (12-36 hrs. post ingestion) and renal insufficiency (24-72 hrs. post ingestion) from toxic metabolites.
Doctoral Director(s:)
Hoi-Ying Elsie Yu, PhD, DABCC, FADLM
Sheng-Ying (Margaret) Lo, PhD, DABCC    
Review Date: 12/29/2022

Performing Locations

Geisinger Medical Center

Performing laboratory: Toxicology
Technical Lead: Karen Stoppie
Frequency: Daily, 7 a.m. - 11 p.m.
Performed STAT? Yes
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