Whether a woman has missed her menstrual period or simply “feels pregnant,” home pregnancy tests offer the convenience of testing without having to make a doctor appointment. Home tests sense the hormone hCG, which is produced by the chorion (part of what will become the placenta) of a developing embryo.

Whether a woman is trying to conceive, trying desperately not to conceive, or merely curious as to why she's missed a period, at some point she’s likely to turn to a home pregnancy test for answers.