If you do not use the first urine after your longest sleep you may see unexpected High Fertility results so it is important that you remember to use the first urine after your longest sleep. Is the only Ovulation Test that accurately tracks the changing levels of 2 key urinary hormone metabolites – E3G and LH. It's important to know that once High Fertility has been detected, your test status will continue to be High Fertility until either Peak Fertility is detected or the last test has been performed.

In the following days the test will continue to display High Fertility whilst it looks for your LH surge.

For more information on this product or answers to your questions, our Careline advisors are available for you 07:00 – 15:00 hrs Mon-Fri, excluding Bank Holidays. This is a popular method where you take your body temperature each morning before you get out of bed. This may be because the estrogen level is not high enough to be detected by the test, or they started testing too late. The Fertility Test Sticks from this pack can only be used with the Clearblue Advanced Fertility Monitor (sold separately) or the Clearblue Fertility Monitor; they don’t work with our other Clearblue Ovulation Tests.

Unlike basal body temperature (BBT) charting, ovulation predictor kits detect the rise in luteinisning hormone (LH) that rises prior to ovulation to accurately detect the days before, and not after ovulation. Clearblue ®’s Fertility Monitor with Touch Screen, Connected Ovulation Test System, and Advanced Digital Ovulation Test measure both your estrogen and LH levels to give you a wide fertility window. Your Clearblue Ovulation Tests can help you to discover when your peak fertility days are, helping you to become pregnant naturally. You're supposed to use this product right when you wake up in the morning, the instructions state that you could also get false results if you use in the middle of the day, and if you use it more than once a day.As the egg only survives 12-24 hours after ovulation it’s too late in this cycle to optimize your chances of getting pregnant. Because of these differences in follicular phase length, the day of the LH surge varies from woman to woman and from cycle to cycle, making it more challenging to accurately detect the timing of peak fertility. While we have taken care in preparing this summary and believe it is accurate, it is not a substitute for your reading the product packaging and label prior to use. Place the absorbent end of the test into your urine stream (pointing downwards) and keep it there for 5 to 7 seconds. Typical menstrual cycle showing the developing follicle and the urinary surge in luteinising hormone.

Detecting the sudden surge in luteinising hormone 24-36 hours before ovulation is the most accurate home method to predict your most fertile days – it’s proven to be two times as accurate as traditional calendar methods. This means you have advanced notice of your most fertile days so you can plan ahead and have more opportunities to get pregnant. However, you’ll find that your test will be most accurate if you use it from the first day of your missed period, with Clearblue test results being up to 99% accurate if you use them at this time.

A ‘blank circle’ symbolises a ‘No LH Surge’ result or a ‘smiley face’ indicating that the LH surge has been detected. In a study, the tests were found to be twice as accurate at predicting ovulation than relying on calendar methods and tracking your own cycle. In every cycle, there are only a few days in which a woman can conceive, so it is important to identify these days to increase your chances of falling pregnant. They identify 2 peak fertility days, as well as additional high fertility days before that, identifying more opportunities to get pregnant- at least twice as many as any other ovulation test.