I would like to know how much a blood level of Methodone at 0.0693 mg/L, nordiazepam 0.033 mg/L, alprazolam 0.115 mg/L, and alpha-oh-alprazolam 0.025 mg/L. If these are the levels six to eight hours after ingesting, how much (approximately) would have been originally been ingested (40 mg, 80 mg, 240 mg etc)? Also,how would the other drugs interact with methodone at this level and the original level (approx). To my untrained eye, these levels look relativley small. Also, is there a way to tell (by examination or labs done by a physician) of someone is a recreational user of any of the above drugs vs addiction or long time user? I hope someone can help answer these questions or direct me to another site!!