You are likely already physically addicted to the hydrocodone because of the long chronic use. There are other long-acting narcotics such as oxycontin or methadone that don t have Tylenol in them. Since you have a chronic pain syndrome, I suggest you see a doctor who specializes in chronic pain management. They are best experienced at managing these type of drugs and minimizing addiction problems. They may also be able to provide non-narcotic treatments such as joint injections that could help. I assume you are getting follow up for your hepatitis C. That would include a blood test to see if the virus is still present in your body. The antibody test just shows if you ve been exposed but doesn t say if you have an active infection. Hope this answers your query. If you have further questions, I would be happy to answer them.