This chapter explains the technology and chemistry behind the Clearblue and Persona over-the-counter products for pregnancy testing, and fertility and ovulation monitoring. Lateral flow immunochromatography is the fundamental platform involved. Digital interfaces provide an unequivocal result indication, representing a major improvement over the traditional one line vs. two line outcome, which was confusing to users and was often misinterpreted.

Sarah Tiplady is currently a clinical research scientist at SPD Development Company Limited and has over 10 years experience of working in the field of medical diagnostics. SPD Development Company, based in Bedford (UK), is a world leader in the research, design, production and supply of advanced consumer diagnostic products. SPD has brands, such as Clearblue^® and PERSONA^®, that are familiar in many countries and trusted for their accuracy and simplicity by women keen to know more about their own reproductive health.

Clearblue^®, Persona^®, near-patient, home testing, point-of-care, lateral flow, immunochromatography, over-the-counter, pregnancy test, latex, capillary action, ovulation test, fertility.