I was given a urine drug test at a testing facility and for some reason it got sent to the lab, It should have been a clean test so im a little puzzled why it was sent to begin with. Today a nurse called asking me questions about taking ceproflexin she said my urine was not testable then she asked if it was adulterated or substituted. what is going on im very worried and they are asking like im a criminal. help me understand.