Clearblue® DIGITAL Ovulation Test works by detecting the increase (surge) in a hormone called Luteinizing Hormone (LH) in your urine. The LH surge occurs approximately 24-36 hours prior to the release of an egg from your ovaries – a process known as ovulation. You are at your most fertile on the day your LH surge is detected and the day after.
Your 2 most fertile days begin from the time that Clearblue® DIGITAL Ovulation Test detects your LH surge. Make love at any time in the next 48 hours to maximize your chance of becoming pregnant.
HOW TO USE
- Remove the ovulation test stick from the foil wrapper.
- Remove the cap
- Before applying urine to the ovulation test stick it must be inserted into the test holder.

- Align the pink arrow on the ovulation test stick with the pink arrow on the test holder and insert until it clicks into place.
- Wait for the 'test ready' symbol to appear and take the ovulation test immediately.
- Place the Absorbent Sampler pointing downwards in your urine stream for 5 to 7 seconds.
- Or collect a sample of your urine in a clean, dry container. Dip the absorbent tip in the urine for 15 seconds.
- Do not get the test holder wet.
- Keep the sampler pointing downwards or lay the Test Stick flat. Throughout testing never hold the test with the absorbent tip pointing upwards.
- After 20 to 40 seconds the 'test ready' symbol will start flashing to show the ovulation test is working.
- Do not eject the ovulation test stick before you get your result.
- Replace the ovulation test stick's cap and wait for 3 minutes.
Within 3 minutes the Display will show your result.
No LH surge: If you get a 'blank circle', the test hasn't detected your LH surge. Test again at the same time tomorrow using a new ovulation test stick.
LH surge: A 'smiley face' means you've detected your LH surge. Your 2 most fertile days are today and tomorrow so having sex in the next 48 hours will maximize your chances of getting pregnant.
- Once you have read your final result eject the ovulation test stick and throw it away.
- Your result can only be read on the test holder display - you cannot determine your result from any lines on the ovulation test stick.
- Your result will remain on the display for 8 minutes.
- Do not re-insert a used ovulation test stick.