| parent | Narcotics | LP18149-2 |
| child | Methadone.long acting metabolite | LP19141-8 |
| child | Methadone | Bile fluid | Drug toxicology | LP389982-2 |
| child | Methadone | Blood | Drug toxicology | LP389983-0 |
| child | Methadone.R | LP31820-1 |
| child | Methadone+Metabolite | LP36029-4 |
| child | Methadone | Gastric fluid | Drug toxicology | LP389984-8 |
| child | Methadone | Hair | Drug toxicology | LP389985-5 |
| child | 2-Ethylidene-1,5-Dimethyl-3,3-Diphenylpyrrolidine | LP35885-0 |
| child | Methadone cutoff | LP228970-2 |
| child | Methadone | Meconium | Drug toxicology | LP389986-3 |
| child | Methadone | Milk | Drug toxicology | LP389987-1 |
| child | Methadone/Creatinine | LP286509-7 |
| child | Methadone | Saliva | Drug toxicology | LP389988-9 |
| child | Methadone | Serum or Plasma | Drug toxicology | LP389989-7 |
| child | Methadone | Stool | Drug toxicology | LP389990-5 |
| child | Methadone | Umbilical cord tissue | Drug toxicology | LP426630-2 |
| child | Methadone | Urine | Drug toxicology | LP389991-3 |
| child | Methadone | Vitreous fluid | Drug toxicology | LP389992-1 |
| child | Methadone | XXX | Drug toxicology | LP389993-9 |
| parent | Narcotics | LP18149-2 |
| child | Methadone | Dose | Drug doses | LP392285-5 |
| PartDisplayName | en-US | Methadone |
| DisplayName | en-US | Methadone |
LOINC Version: 2.77
FHIR