Yes Naprelan (naproxen) can but: Apparently Naproxen (naprelan) can rarely cause a false positive on some marijuana screening tests. If this happens you can ask for it to be confirmed with a more specific test which will show that the positive was actually false. See http://forums.Webmd.Com/3/sub stance-abuse-exchange/forum/766/2.
Answered 8/17/2017
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