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Test ID FFMTH Meconium Methadone Screen with Reflex Confirmation

Specimen Required

Container/Tube: Sterile collection container

Specimen Volume: 3 g

Collection Instructions: Collect specimen into the same sterile collection container until 3 g of meconium have been collected or until the first milk stool appears. When at least 3 g of meconium has been collected, tightly screw on the cap of the collection vial and send specimen ambient.

Note: Specimens from different voids may be pooled if necessary.

Reflex Tests

Test ID Reporting Name Available Separately Always Performed
FMTHM Meconium Methadone Confirm No No

Testing Algorithm

If screen is positive, then the Meconium Methadone Confirmation (FMTHM) will be performed at no additional charge.

Method Name

Immunoassay (IA); Chromatography/with Mass Spectrometry

Reporting Name

Meconium Methadone Scr/Confirm

Specimen Type


Specimen Minimum Volume

1 g

Specimen Stability Information

Specimen Type Temperature Time Special Container
Meconium Ambient (preferred) 14 days
  Frozen  365 days
  Refrigerated  14 days

Reference Values

Initial presumptive testing by  immunoassay at the following testing threshold:

Methadone:       50 ng/gm


Presumptive positive confirmed by definitive chromatography mass spectrometry (GC/MC or LC/MS-MS)

Day(s) Performed

Monday through Sunday

Report Available

1 to 6 days

Performing Laboratory

Medtox Laboratories, Inc.

CPT Code Information


LOINC Code Information

Test ID Test Order Name Order LOINC Value
FFMTH Meconium Methadone Scr/Confirm 43595-8


Result ID Test Result Name Result LOINC Value
Z5603 Methadone 43595-8