Hello Sir, I understand your concern. The question you ask stands; Oxazepam is an active metabolite formed during the breakdown of diazepam and certain similar drugs. Urine toxicology reports of daily or frequent diazepam users will most likely indicate the presence of all three metabolites of diazepam: nordazepam, temazepam and oxazepam. As the end product of diazepam metabolism, oxazepam often is present at slightly higher concentrations in the urine than nordiazepam and temazepam. Thus, oxazepam often remains detectable in the urine for a day or two after the other metabolites have been fully eliminated. If patients are drug tested several days after their last dose of diazepam, it is not uncommon to detect only trace levels ( Hope I answered to your question. If you have further concerns, please feel free to ask.