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DrRussMD, Doctor (MD)
Category: Health
Satisfied Customers: 64363
Experience:  Practice Director
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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: 1 year ago.
Category: Health
Expert:  DrRussMD replied 1 year 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