How soon can a pregnancy test detect pregnancy?

Pregnancy test strips can usually detect pregnancy 10–14 days after conception. This timeframe is primarily based on the time it takes for the embryo to implant, after which the levels of human chorionic gonadotropin (HCG) in the body begin to rise. Embryo implantation generally takes about 6–7 days, after which HCG levels increase rapidly and can be detected through urine. For women with regular menstrual cycles, pregnancy test strips can be used around 7–10 days after conception. However, for women with irregular menstrual cycles, it may be necessary to wait more than 14 days after conception for the pregnancy to be detected using a test strip. This is because irregular menstruation may affect the timing of embryo implantation and the rate of HCG secretion. When using a pregnancy test strip, it is recommended to follow the instructions carefully and preferably use first-morning urine to enhance the accuracy of the test results.