For what reason you have being taking this medication and since how long? This medication is used to treat narcotic
(opioid) dependence. It works by preventing withdrawal symptoms
. Since the buprenorphine
) is actually a type of narcotic (opioid) itself, It will appear in the urine even after few days of last dosing. It shall affect the drug screen and show as an opiate. You can carry a Medical Certificate from the treating specialist about the treatment.