MethadoneMetabolic Detoxication, DrugNarcoticsOpioid-Related DisordersOpiate Substitution TreatmentHeroin DependenceBuprenorphineMethadyl AcetateAnalgesics, OpioidNeonatal Abstinence SyndromeHeroinSubstance Abuse DetectionSubstance Withdrawal SyndromeNarcotic AntagonistsGlutathione TransferaseDrug OverdosePyrrolidinesSubstance-Related DisordersSubstance Abuse, IntravenousStreet DrugsXenobioticsMorphineDextropropoxypheneNaloxoneNaltrexoneOxidoreductases, N-DemethylatingCocaine-Related DisordersMetabolic Detoxication, Phase IICodeineStereoisomerismPhytochelatinsOpiumGlutathioneBiotransformationDose-Response Relationship, DrugPrisonersCytochrome P-450 CYP3AMeconiumNF-E2-Related Factor 2Drug InteractionsTherapeutic CommunityCytochrome P-450 Enzyme SystemAryl Hydrocarbon HydroxylasesNAD(P)H Dehydrogenase (Quinone)Directly Observed TherapyGlutathione S-Transferase piResidential TreatmentLactoylglutathione LyaseBaltimoreGas Chromatography-Mass Spectrometry