A member asked:

Girlfriend is late and took a hpt on tuesday morning and it was negative, she took another one on wednesday afternoon and it was positive. then took two more test at the local ob/gym clinic on the same day and both were negative. whats causing this?

3 doctors weighed in across 2 answers
Dr. Hiep Le answered

Specializes in Nephrology and Dialysis

One doctor answered this question already. False positive test does happen so doctor always orders blood test for confirmation and establish the baseline if the test is truly positive.

Answered 11/27/2021

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Not following the instructions for performing the test, assiduously will give erroneous results. Follow the instructions carefully including the time within which it needs to be read.

Answered 11/25/2021

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