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A member asked:
I was using antihistamine meds&i stopped taking them 1week ago.today i took a hpt (44 days after sex), but can it be false neg because of these meds?
A doctor has provided 1 answer
Promethazine: (an antihistamine) can sometimes cause a false negative on pregnancy test. Were you taking promethazine?
Answered 11/18/2014
3.5k views
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