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HelpTest Code MTDNU Methadone Confirmation, Random, Urine
Ordering Guidance
1. For situations where chain of custody is required, a Chain-of-Custody Kit (T282) is available. For chain-of-custody testing, order MTDNX / Methadone Confirmation, Chain of Custody, Random, Urine.
2. Additional drug panels and specific requests are available. Call 800-533-1710 or 507-266-5700.
3. If urine creatinine is required or adulteration of the sample is suspected, order ADULT / Adulterants Survey, Random, Urine.
Specimen Required
Supplies: Urine Tubes, 10 mL (T068)
Container/Tube: Plastic, 10-mL urine tube
Specimen Volume: 10 mL
Collection Instructions:
1. Collect a random urine specimen.
2. No preservative.
Useful For
Monitoring for compliance of methadone treatment for analgesia or drug rehabilitation
Assessing compliance with rehabilitation programs by urine measurement of 2-ethylidene-1,5-dimethyl-3,3-diphenylpyrrolidine
Method Name
Gas Chromatography Mass Spectrometry (GC-MS) Confirmation with Quantitation
Reporting Name
Methadone Confirmation, USpecimen Type
UrineSpecimen Minimum Volume
2.5 mL
Specimen Stability Information
| Specimen Type | Temperature | Time | Special Container |
|---|---|---|---|
| Urine | Refrigerated (preferred) | 28 days | |
| Frozen | 28 days | ||
| Ambient | 14 days |
Reject Due To
| Gross hemolysis | OK |
| Gross icterus | OK |
Reference Values
Negative
Cutoff concentrations:
METHADONE BY GC-MS
<100 ng/mL
2-ETHYLIDENE-1,5-DIMETHYL-3,3-DIPHENYLPYRROLIDINE GC-MS
<100 ng/mL
Day(s) Performed
Tuesday, Thursday
Report Available
3 to 7 daysPerforming Laboratory
Mayo Clinic Laboratories in Rochester
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.CPT Code Information
80358
G0480 (if appropriate)
LOINC Code Information
| Test ID | Test Order Name | Order LOINC Value |
|---|---|---|
| MTDNU | Methadone Confirmation, U | 104626-7 |
| Result ID | Test Result Name | Result LOINC Value |
|---|---|---|
| 56028 | EDDP-by GC-MS | 104627-5 |
| 83129 | Methadone-by GC-MS | 104628-3 |
| 21107 | Methadone Interpretation | 69050-3 |
| 21110 | Chain of Custody | 77202-0 |
Forms
If not ordering electronically, complete, print, and send a Therapeutics Test Request (T831) with the specimen.