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When is it advisable to do a pregnancy test if there is implantation bleeding?

By Zaira Salvador B.Sc., M.Sc. (embryologist).
Last Update: 07/13/2022

Since implantation bleeding usually occurs a few days before the expected date of menstruation, it is best to wait until the missed period for the pregnancy test to be reliable.

The pregnancy test detects the beta-hCG hormone, which is secreted by the embryo after implantation. Therefore, if we do the pregnancy test before the recommended date, it is likely that the beta-hCG levels won't have risen sufficiently and a false negative will occur.

 Zaira Salvador
Zaira Salvador
B.Sc., M.Sc.
Embryologist
Bachelor's Degree in Biotechnology from the Technical University of Valencia (UPV). Biotechnology Degree from the National University of Ireland en Galway (NUIG) and embryologist specializing in Assisted Reproduction, with a Master's Degree in Biotechnology of Human Reproduction from the University of Valencia (UV) and the Valencian Infertility Institute (IVI)
License: 3185-CV
Embryologist. Bachelor's Degree in Biotechnology from the Technical University of Valencia (UPV). Biotechnology Degree from the National University of Ireland en Galway (NUIG) and embryologist specializing in Assisted Reproduction, with a Master's Degree in Biotechnology of Human Reproduction from the University of Valencia (UV) and the Valencian Infertility Institute (IVI) License: 3185-CV.