Test Overview
Test Methodology

Gas Chromatography/Mass Spectrometry (GC/MS)

Test Usage

Therapeutic drug monitoring.

Test Details
Days Set Up
Tuesday, Thursday
Analytic Time

8 - 16 days

Soft Order Code
FKEMS
Synonyms
  • Ketalar
Laboratory
Sendout
Reference Laboratory
Mayo FKEMS (NMS)
Section
Special Testing
Specimen Requirements
Collection Instructions

Collect specimen in a red top tube; do not use SST tube. Centrifuge, aliquot serum into a plastic vial, and refrigerate. EDTA or sodium heparin plasma is also acceptable.

Rejection Criteria
SST tube not acceptable.
Yellow Top Tube
Red Top Tube
Normal Volume
5 mL serum or plasma
Minimum Volume
2.4 mL serum or plasma
Additional Information

If Ketamine and Metabolite Screen is positive, then Ketamine and Metabolite Confirmation will be performed at an additional charge. By ordering this test the clinician acknowledges that additional reflex testing will be performed and billed at a separate additional charge if indicated. Test sent to Mayo Medical Laboratories; performed by NMS Labs.

Billing
CPT Code
80307
Fee Code
AA942
Reflex CPT
80357
Reflex Fee Code
AA943
NY State Approved
No