In a GCMS, UDA Codeine, Hydrocodone,
Oxycodone,
Oxymorphone, 6-acetyl morphine (Heroin metabolite) is an unexpected result.
Another study: hydromorphone was detected in patients treated with high-dose morphine. The ratio of hydromorphone to morphine ranged from 0.2 to 2.2%. Oxymorphone was not detected in any specimen from high-dose morphine or high-dose hydromorphone patients. The authors conclude, based on these data, that oxymorphone is not a metabolite of morphine or hydromorphone.