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A member asked:
Can theophylline (prescribed for asthma) show up in pre employment drug test as an opiate or illegal substance?
4 doctors weighed in across 2 answers
Theophylline: I thought you were given theophylline as a child. In your previous question you said this was not prescribed for over ten years, . What is the real story? Are you trying to find a substitute cause for testing positive on a drug screen? Theophylline will not cause a positive for illegal substances.
Answered 6/19/2014
4.7k views
No it cannot: Alwaystestclean.Com/false_positive_drug_test_list.Htm the most complete list of cross reactants that cause a false positive drug test on the internet.
Answered 3/16/2018
4.7k views
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