An opiate blocker, is that an opiate antagonist, actually? Just trying to clarify. The
names I have of drugs that are opiate antagonists are methylnaltrexone, nalbuphine, nalmefene, nalorphine, naloxone, naltrexone, and nalorphine. I have read that false positives happen. If you have the money, I'd check with a lawyer. This is ashame you are left without care.