Can expired early pregnancy test papers detect pregnancy?

Early pregnancy test strips may not accurately detect pregnancy.

Chemical reagents in early pregnancy test strips may gradually lose their effectiveness over time. After expiration, these reagents may no longer react sensitively with relevant hormones in urine, resulting in inaccurate test results and false negatives or false positives.

In order to obtain accurate pregnancy test results, it is recommended not to use expired early pregnancy test strips, but to select test strips that are properly stored within their shelf life. If there are doubts about the test results, consult a professional doctor or visit a medical institution for further tests, such as blood tests, to ensure the accuracy and reliability of the results.