HydrocodoneIbuprofenHydromorphoneOxycodoneCodeineOxymorphoneObstetric Surgical ProceduresAnalgesics, OpioidSubstance Abuse DetectionMorphine DerivativesAcetaminophenAntitussive AgentsNarcoticsMiosisCytochrome P-450 CYP2D6Gas Chromatography-Mass SpectrometryAnti-Inflammatory Agents, Non-SteroidalOpioid-Related Disorders