Clearblue Refill Pack For Advanced Fertility Monitor: 20 Tests Ovulation & 4 Pregnancy Tests, 24 (Monitor Sold Separately), Packaging May Vary

20 fertility tests and 4 pregnancy tests to be used with a Clearblue Advanced Fertility Monitor Clearblue Advanced Fertility Monitor is proven to increase the chances of getting pregnant naturally by 89% (1) Clearblue Advanced Fertility Monitor tracks 2 key fertility hormones – designed to detect all your fertile days Hormones are a more accurate predictor of ovulation than basal body temperature (BBT), which only rises after ovulation Clearblue Advanced Fertility Monitor is the only monitor you can also use to test for pregnancy The most advanced Fertility Monitor, clinically validated by ultrasound (Clearblue ovulation assay showed 97% agreement with ultrasound observed ovulation. Behre HM., et al. Human Reproduction (2000) 15: 2478-82) 99% accurate at detecting the LH surge and over 99% accurate at detecting pregnancy from the day your period is due