| parent | Methadone | LP15015-8 |
| child | Methadone.long acting metabolite | Serum or Plasma | Drug toxicology | LP389994-7 |
| child | Methadone.long acting metabolite | Urine | Drug toxicology | LP389995-4 |
| STATUS | ACTIVE |
| PartDisplayName | en-US | Methadone.long acting metabolite |
| DisplayName | en-US | Methadone.long acting metabolite |
LOINC Version: 2.81