I wrote about my urine test showing darvocet in my system, which I DID NOT take. at one point my DR had me try Nucynta, which did not work well for the pain at all and i had a damn allergic reaction from it (got a rash from it). could the Nucynta still have been in my system and showed up as darvocet properties? someone please answer this because my Dr. is not willing to treat me anymore because of this!!! this Dr. is acting freaking rediculous!!! If anyone knows, please help a girl out because i would like to confront my Dr. if this could be a possibility. ALSO, does anyone know how long Nucynta AND 10mg oxycodone(4X's a day) stay in your system? i just need some info because i truely feel like my Dr. gave me the ole' heave ho because i was loosing my insurance...