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HelpTest Code MTDNUM Methadone Confirmation, Random, Urine
Additional Codes
| Mayo | MTDNU |
| Epic ID | LAB6370 |
Special Instructions
Specimen Type
UrineOrdering 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)
Collection Container/Tube: Plastic urine container
Submission Container/Tube: Plastic, 10-mL urine tube
Specimen Volume: 10 mL
Collection Instructions:
1. Collect a random urine specimen.
2. No preservative.
Specimen Minimum Volume
2.5 mL
Specimen Stability Information
| Specimen Type | Temperature | Time |
|---|---|---|
| Urine | Refrigerated (preferred) | 28 days |
| Frozen | 28 days | |
| Ambient | 14 days |
Transport refrigerated.
Reject Due To
| Gross hemolysis | OK |
| Gross icterus | OK |
Performing Laboratory
Mayo Clinic Laboratories in Rochester
Method Name
Gas Chromatography Mass Spectrometry (GC-MS) Confirmation with Quantitation
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
Day(s) Performed
Tuesday, Thursday
Report Available
3 to 7 daysReference Values
Negative (Positive results are reported with a quantitative result.)
Cutoff concentrations by gas chromatography mass spectrometry:
METHADONE: 100 ng/mL
2-ETHYLIDENE-1,5-DIMETHYL-3,3-DIPHENYLPYRROLIDINE (EDDP): 100 ng/mL
CPT Code Information
G0480
80358 (if appropriate for select payers)