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Does Indole-3-Carbinol Cause A Positive Cotinine Test?
Good evening, doctor. I test positive for cotinine in my urine for an insurance policy test and they label me as a smoker which I am not. It is a false positive. Can cotinine levels in the urine be caused from a diet high in cruciferous vegetables with the presence of indole-carbinol? Thank you
Tue, 5 Mar 2019
Hello,
Cotinine is the major metabolite of nicotine found in urine in higher concentrations than in blood or saliva.
Indeed, cruciferous foods, containing indol 3 carbinol if consumed prior to testing will cause false positive results.
Plus exposure to nicotine fumes can also cause false positive results. It will take 4 days for the body to get clear urine.
So try to avoid these foods, plus avoid exposure to the fumes at least 5 days prior to testing.
Hope I have answered your query. Let me know if I can assist you further.
Take care
Regards,
Dr Albana Sejdini, General & Family Physician
Cotinine is the major metabolite of nicotine found in urine in higher concentrations than in blood or saliva.
Indeed, cruciferous foods, containing indol 3 carbinol if consumed prior to testing will cause false positive results.
Plus exposure to nicotine fumes can also cause false positive results. It will take 4 days for the body to get clear urine.
So try to avoid these foods, plus avoid exposure to the fumes at least 5 days prior to testing.
Hope I have answered your query. Let me know if I can assist you further.
Take care
Regards,
Dr Albana Sejdini, General & Family Physician
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