Methadone and Metabolite, With Ratio, Plasma

TEST: 702096
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CPT: 80299
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Synonyms

  • Dolophine®

Expected Turnaround Time

3 - 6 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

Plasma, frozen

Volume

3 mL

Minimum Volume

0.6 mL

Container

Green-top (Heparin) tube or lavender-top (EDTA) tube

Collection

Transfer separated plasma to a plastic transport tube. Freeze.

Storage Instructions

Freeze immediately, ship frozen on dry ice.

Stability Requirements

• Room Temperature: Not stable

• Refrigerated: Not stable

• Frozen: 14 Days

• Freeze/thaw cycles: Stable x3

Causes for Rejection

Specimen received not frozen; any sample type other than plasma

Test Details

Use

Therapeutic Drug Management

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
702096 METHADONE/EDDP RATIO, Plasma 96602-8 702093 Methadone (Dolophine) ng/ml 3772-1
702096 METHADONE/EDDP RATIO, Plasma 96602-8 702094 EDDP (Methadone Mtb) ng/mL 60071-8
702096 METHADONE/EDDP RATIO, Plasma 96602-8 702095 Methadone/EDDP ratio 58390-6

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