Geisinger Medical Laboratories Test Catalog

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


Geisinger Epic Procedure Code: LAB1198             Geisinger Epic ID: 52717

Specimen type:
Serum (preferred) or plasma
Preferred collection container:
Alternate Collection Container:
4 mL grey-top (Na fluoride/K oxalate) tube
Specimen required:
5 mL serum; minimum 1.5 mL.
Special notes:
Do not collect in gel tube.

Specimen processing instructions:
Centrifuge and aliquot. 
Transport temperature:
Refrigerated (cold packs)
Specimen stability:
Room temperature: 72 hours. Refrigerated: 14 days. Frozen: 30 days.

Additional information:
This test was developed and its analytical performance characteristics have been determined by Quest Diagnostics. It has not been cleared or approved by the U.S. Food and Drug Administration. This assay has been validated pursuant to the CLIA regulations and is used for clinical purposes.
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.
Gas Chromatography/Mass Spectrometry (GC/MS)
Quest test code 645, Quaalude S/P
Clinical significance:
Methaqualone ("quaaludes") is a central nervous system depressant, with similar effects to barbiturates, and has been prescribed as an anti-anxiety medication or sleep aid. This drug is no longer manufactured or distributed in the United States, and true positive patient samples are uncommon. The detection of methaqualone in serum or urine is useful in the detection of abuse by individuals, resultant treatment for those individuals, and possibly in assisting with criminal prosecution.

Performing Locations

Quest Diagnostics

Technical Lead: Michael Weaver    
Frequency: Set up: Wed evenings; Report available: 3 days    
Performed STAT? No
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