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Test Code MDNS Methadone and Metabolites, Serum

Important Note

Effective date: 11/18/24

Test code: MDNS

This assay has been redeveloped and testing will resume on the effective date. The redevelopment resulted in the following changes:

New Specimen Stability:
Serum Red
Refrigerated - 28 Days
Ambient - 7 Days
Frozen - 28 Days

New Requested/Minimum Volume:
1.0 mL / 0.5 mL

New Days Performed:
Tuesday, Thursday

The following alternate referral code will become obsolete:

Test ID: MIMAY-;FMTMS (Methadone and Metabolite, Serum)

Questions? Contact Brandon DeBoom, Laboratory Resource Coordinator at 1-800-533-1710

Additional Codes

Mayo Code
MDNS
EPIC Code
LAB1054
Sunquest Code
MDNS

 

Useful For

Compliance monitoring of methadone

 

Assessment of methadone toxicity

Reporting Name

Methadone and Metabolite, S

Specimen Type

Serum Red


Specimen Required


Supplies: Sarstedt Aliquot Tube, 5 mL (T914)

Container/Tube: Red top (Serum gel/SST are not acceptable)

Submission Container/Tube: Plastic vial

Specimen Volume: 1.0 mL

Collection Instructions: Within 2 hours of collection, centrifuge and aliquot serum into a plastic vial.


Specimen Minimum Volume

0.5 mL

Specimen Stability Information

Specimen Type Temperature Time Special Container
Serum Red Refrigerated (preferred) 28 days
  Frozen  28 days
  Ambient  14 days

Reject Due To

Gross hemolysis OK
Gross lipemia OK
Gross icterus OK

Reference Values

Not established

Day(s) Performed

Tuesday, Thursday

Report Available

3 to 5 days

Performing Laboratory

Mayo Clinic Laboratories in Rochester

CPT Code Information

80299

LOINC Code Information

Test ID Test Order Name Order LOINC Value
MDNS Methadone and Metabolite, S 96602-8

 

Result ID Test Result Name Result LOINC Value
36309 Methadone 3772-1
36310 EDDP 60071-8

Test Classification

This test was developed and its performance characteristics determined by Mayo Clinic in a manner consistent with CLIA requirements. It has not been cleared or approved by the US Food and Drug Administration.

Forms

If not ordering electronically, complete, print, and send a Therapeutics Test Request (T831) with the specimen.