Clearblue Connected Ovulation Test System is the only test that typically identifies four or more fertile days each cycle*. These are the days leading up to and including the day of ovulation. It does this by accurately tracking two key fertility...

The Clearblue Advanced Digital Ovulation Test ( Prueba de Ovulacion Advanced Digital Clearblue) typically identifies 4 or more fertile days leading up to, and including the day of ovulation, at least twice as many as any other ovulation test.**...

The ClearblueAdvanced Digital Ovulation Test is a breakthrough: not only does it detect the rise in luteinizing hormone (LH), it also monitors the level of another key fertility hormone, estrogen, which increases in the days before the LH surge. ...