Frequently Asked Questions About the Clearblue Digital Ovulation Test

Before you can be sure when to start testing, you need to work out your usual cycle length. The length of your cycle is the number of days from the day your period starts (Day 1) to the day before your next period starts.

Click here to figure out on which day of your cycle you should start testing. Once you've started using Clearblue Ovulation Tests, the Clearblue Digital Cycle Calendar can help you record your cycle information.

The length of the cycle can vary from one woman to another, and can vary from cycle to cycle in the same woman.

To make sure that the hormone level in your urine is concentrated enough for the test to detect, it’s important not to urinate for at least 4 hours before doing the test.

You can test at any time of the day, but it should be at the same time each day. Many women find that first thing in the morning is the most convenient.

The Clearblue DIGITAL Ovulation Test helps you to pinpoint the 2 fertile days in your cycle by identifying a sudden surge in Luteinising Hormone (LH) in your body with a simple urine test. LH is the hormone that triggers the release of an egg from your ovary. This release – ovulation – usually occurs approximately 24 to 36 hours after the LH surge.

If you use it each day on the days around the time in your cycle when you expect the LH surge, you can predict the 2 days each cycle when you are most fertile and therefore most likely to get pregnant.

The time when you are most fertile is on the day the LH surge is detected and the day after. You are most likely to get pregnant if you make love on these days. Clearblue DIGITAL Ovulation Tests detect this LH surge, and therefore maximise your chances of conceiving.

Clearblue Digital Ovulation Tests have been shown in extensive laboratory trials to be over 99% accurate in detecting the LH surge before ovulation.

Please note: these are abbreviated instructions. Always read the in-pack leaflet before carrying out a test.
The Clearblue Digital Ovulation Test is very easy to use. When you’re ready to test remove a Test Stick from its foil wrapper. Before applying urine to the Test Stick it must be inserted into the Test Holder.

The Test Stick and Test Holder are marked with pink arrows that must be aligned to ensure correct insertion. The Test Stick clicks into place and a symbol appears on the Test Holder display.

When the ‘Test Ready’ symbol appears, you simply hold the Absorbent Sampler pointing downwards in your urine stream for 5 to 7 seconds. Alternatively, you can collect a sample of urine in a clean dry container and immerse just the Absorbent Sampler in the collected sample for 15 seconds.

Keep the Absorbent Sampler pointing downwards or lay the Test flat. After 20 to 40 seconds, the ‘Test Ready’ symbol will flash to show that the test is working. Do not eject the Test Stick. Replace the cap and then wipe off any excess urine.

Within 3 minutes, the display will show your result.

No Peak Fertility: A blank circle means a ‘No LH Surge’ result. Test again tomorrow at the same time using a new Test Stick.


Peak Fertility: A smiley face means the LH surge has been detected. There is no need to test again this cycle. Making love any time in the next 48 hours will maximise your chances of getting pregnant.


Click here to watch the Digital Ovulation Test demo.