The modern urine-based home pregnancy test first appeared in drug stores in 1977. Unlike the streamlined, simple color-coded test results prospective parents enjoy today, this test was complicated, involving several implements and steps, and was also finicky and time-consuming. The slightest vibration could spoil the test results.
“it contained a vial of purified water, an angled mirror, a test tube and red blood cells taken from a sheep.” — New York Time
But, the idea that the urine of a pregnant woman was perceptibly different from that of a non-pregnant woman has persisted since ancient times. The first known recorded pregnancy test dates to 1350 BCE in ancient Egypt.