Ketamine and Metabolite, Quantitative, Serum or Plasma

CPT: 80357
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Test Details


  • Ketalar®

Test Includes

Ketamine; norketamine


Therapeutic drug management; detect presence of ketamine


Liquid chromatography/tandem mass spectrometry (LC/MS-MS)

Specimen Requirements


Serum or plasma


2 mL


Red-top tube or gray-top (sodium fluoride) tube. Gel-barrier tubes are not recommended.

Patient Preparation

Trough levels are most reproducible.


Serum or plasma should be separated from cells within two hours of venipuncture. Submit serum or plasma in a plastic transport tube.

Storage Instructions

Submission/transport (<3 days): Room temperature. For storage beyond three days, specimen should be refrigerated or frozen.

Causes for Rejection

Gel-barrier tubes


Order Code Order Code Name Order Loinc Result Code Result Code Name UofM Result LOINC
790620 Ketamine and Mtb. Qt, S/P 790572 Ketamine ng/mL 3701-0
790620 Ketamine and Mtb. Qt, S/P 790576 Norketamine ng/mL 21421-3

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