How JustAnswer Works:
  • Ask an Expert
    Experts are full of valuable knowledge and are ready to help with any question. Credentials confirmed by a Fortune 500 verification firm.
  • Get a Professional Answer
    Via email, text message, or notification as you wait on our site.
    Ask follow up questions if you need to.
  • 100% Satisfaction Guarantee
    Rate the answer you receive.
Ask DrThomasMD Your Own Question
DrThomasMD, Doctor (MD)
Category: Health
Satisfied Customers: 63757
Experience:  Practice Director
Type Your Health Question Here...
DrThomasMD is online now
A new question is answered every 9 seconds

My son was taking acyclovir 400 mg and his urine test showed

Customer Question

My son was taking acyclovir 400 mg and his urine test showed codeine. At work he may have taken some acetaminophen from the first aid kit. Would the combination of those 2 drugs acyclovir and acetaminophen make codeine show up in the urine test? He hasn't taken any other drugs so he doesn't know how codeine would show in his test.
Submitted: 5 months ago.
Category: Health
Expert:  DrThomasMD replied 5 months ago.
HelloNoThese would not show a false positive.Even if they did, any positive is sent for GC/MS confirmation.If they don't do confirmation, they can not claim a positive.Make sure he checks. OK, so you might have more questions or want to give me more information: Please use reply to expert if you have further questions. When you are ready, please click a positive rating [hopefully excellent—that’s how we are paid, per rating]. If you forgot something, come back. I am here