Home pregnancy tests often employ dye technology to indicate results. These tests typically use either pink or blue dye to visually display the presence of human chorionic gonadotropin (hCG) in urine, a hormone produced during pregnancy. The color appears in a designated area on the test strip, signifying a positive result. The choice of dye is a manufacturing preference and doesn’t inherently impact the test’s accuracy.
The availability of over-the-counter pregnancy tests provides a convenient and private method for individuals to determine pregnancy status. These tests offer an early indication, often before a missed menstrual period. The use of color-coded results streamlines interpretation and reduces ambiguity, contributing to user confidence. Their widespread adoption has also influenced family planning and healthcare access.