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Can Sulfamethoxazole Tmp Ds Cause False Negative Pregnancy Test?

Updated January 10, 2022
Makkkk Says:
Wed, January 4, 2012

I have suspicions that I am pregnant and have even taking this medicine twice a day orally for acne for a couple weeks. I tested myself last night and it said I was not pregnant. I was wondering if this medicine can give false negative results? And how likely it is?

1 Reply

1
Verwon Says:
Sun, February 26, 2012

I'm not aware of anything showing that this antibiotic is known to cause false results on a pregnancy test.

https:/­/­rxchat.com/­wiki/­Bactrim/­

However, if you believe you are pregnant, you should consult your doctor to have an actual lab test performed, since they are the most reliable.

Are there any other questions or comments?

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