Ketamine and Metabolite, Quantitative, Serum or Plasma

TEST: 790620
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CPT: 80357
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Synonyms

  • Ketalar®

Test Includes

Ketamine; norketamine

Expected Turnaround Time

7 - 14 days

Turnaround time is defined as the usual number of days from the date of pickup of a specimen for testing to when the result is released to the ordering provider. In some cases, additional time should be allowed for additional confirmatory or additional reflex tests. Testing schedules may vary.

Specimen Requirements

Specimen

Serum or plasma

Volume

2 mL

Minimum Volume

0.5 mL

Container

Red-top (no additive) tube or green-top (heparin) tube; gel-barrier tubes are not recommended

Collection

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.

Patient Preparation

Trough levels are most reproducible.

Causes for Rejection

Gel-barrier tubes

Test Details

Use

Therapeutic drug management; detect presence of ketamine

Methodology

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

LOINC® Map

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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