Clearblue & Natural Cycles Birth Control Ovulation Test Refill Pack, 15 Digital Ovulation Tests

Clearblue Digital Ovulation Test helps you find your most fertile days by detecting a rise in luteinizing hormone (LH) before ovulation. Add your LH results to the Natural Cycles app with the Starter Pack. It is over 99% accurate at identifying the LH surge. Do not rely on LH results alone for contraception; use the app data for safety, indicating 'Not fertile' Green Days or 'Use protection' Red Days.

• REFILL PACK: this refill pack is for use with the Clearblue & Natural Cycles Birth Control Kit Starter Pack which is sold separately
• INCLUDES: one digital holder and 15 Clearblue Digital Ovulation Test sticks
• IDENTIFIES A KEY FERTILITY HORMONE(LH): identifies the surge in luteinizing hormone (LH) which happens 24-36 hours before ovulation to identify your most fertile days
• CLEAR RESULTS: a flat line indicates No LH surge ('Negative') and a line with a surge indicates an LH surge ('Positive')
• HOW TO USE: add your LH results into the Natural Cycles app (available with Clearblue & Natural Cycles Birth Control Starter Pack)
• OVER 99% ACCURATE: at detecting the LH surge.
• DO NOT USE the LH surge result for contraceptive purposes. The Natural Cycles app uses temperature, period, and (optional) ovulation test data to determine your Green Day ('Not fertile') or Red Day ('Use protection').