Dextromethorphan (DM) and Metabolite, Quantitative, Urine

CPT: 80362
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Test Details


  • Methorphan

Test Includes

Dextromethorphan; dextrorphan


Detect presence of dextromethorphan, an over-the-counter cough suppressant with abuse potential


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

Specimen Requirements


Urine (random)


10 mL

Minimum Volume

0.5 mL


Plastic urine container without preservative

Storage Instructions

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

Causes for Rejection

Urine in preservative tube


Order Code Order Code Name Order Loinc Result Code Result Code Name UofM Result LOINC
790340 Dextromethorphan + Mtb, Ur Qt 790341 Dextromethorphan ng/mL 21240-7
790340 Dextromethorphan + Mtb, Ur Qt 790342 Dextrorphan ng/mL 73566-2

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