The Monitor will automatically set a testing window from 05.00 to 11.00 (as urine tests need to be performed on first morning urine) and the user can only perform a test during this 6 hour window. However, the user can change the timing of this testing window if they wish. Interactive – dates of intercourse and levels of menstrual bleeding can be input and stored on the Monitor for future use The Clearblue Advanced Fertility Monitor is suitable for women whose cycles normally last between 21 and 42 days. If your cycles are always shorter than 23 days or always longer than 37 days it may not detect your LH surge. To work out how long your cycle is note the day your period starts (first day of full menstrual flow) as day 1, and then count through to the day before your next period starts. The total number of days is your cycle length.

The cycle summary chart screen displays data from the previous six cycles in a graph format. It displays a summary of length of cycle and days of High and Peak fertility, together with records of intercourse on High and Peak days.But what do all these monitor readings really mean? Each of these shifts—from low to high, and high to peak—correspond to specific shifts in your fertile hormones which occur in the lead-up to ovulation. It has been shown to accurately predict ovulation compared with serum hormone measurements and vaginal ultrasound scans 2,9

The Clearblue Fertility Monitor is a handheld electronic device that helps you identify the most fertile days in each menstrual cycle by measuring your luteinizing hormone (LH) and estrogen levels. Robinson J., et al. Increased pregnancy rate with use of Clearblue® Easy Fertility Monitor. Fertility and Sterility. (2007) 87: 329–34.Some medications are contra-indicated in pregnancy. We recommend that you consult your doctor if you are taking any medication before you try to get pregnant.

The menstrual cycle is controlled by the anterior pituitary gonadotrophins (follicle-stimulating hormone and luteinising hormone, LH) and the gonadal sex hormones (estrogen and progesterone) 3 Accurate – 99% accurate in detecting the LH surge in urine and over 99% accurate at detecting pregnancy 7†,14* bNumber of fertile days will vary. In a German study of 149 cycles, Monitor results correlated with serum hormone levels and ultrasound observed ovulation. 6In this article, I share information on the research and science behind the monitor which you won’t find anywhere else. You can see more about our products in the comparison chart below to get a better idea about the different Clearblue tests and monitor that are available.

Peak is displayed on the day, and subsequent day, of the Monitor detecting a surge in LH, which typically occurs 24–36 hours before ovulation, and indicates that the user is at the most fertile time in her cycle.Estrone-3-glucuronide (E3G) is a principal metabolite of estradiol which is recognised by the World health Organisation (WHO) as the best parameter for identification of the onset of the fertile phase 10. Urinary levels of E3G correspond to the serum levels of estradiol. 11 You can also use our when to start ovulation testing tool to find the right day to start testing for you. You just need to input your average cycle length, the day your last period started and which ovulation test you’re using. Which ovulation test is right for me? We launch the Clearblue Pregnancy Test System, which is the world’s first rapid pregnancy test that gave accurate results in just 30 minutes.