Are Persona and Fertility Monitor sticks interchangeable?
The Persona is an electronic fertility device sold only in Europe and marketed as a contraceptive. The Clearblue Fertility Monitor is an electronic device sold in North America and marketed as an aid-to-conception. While the devices look different on the outside, they both work by reading peed-upon sticks, and both sets of sticks detect luteinizing hormone (LH) and estrogen. Furthermore, both devices (and sticks) are manufactured by Unipath Ltd.
