Plasma estradiol is the major physiological determinant of the onset of the fertile window; it stimulates secretion of cervical mucus that is favourable for the survival and transport of sperm. Estradiol levels gradually rise in the early stage of the woman’s cycle, reaching a threshold that triggers a sudden increase in LH – the LH surge 4 Even now, 20 years later, the Marquette Method still uses the Clearblue monitor because it’s proven to be the best one to help women avoid pregnancy. They continue to research other monitors ( including the Mira monitor) as they become available, but currently only the Clearblue Monitor is compatible with Marquette. Mira Fertility Monitor

Data on file. Clearblue Advanced Fertility Monitor detected 74% of pregnancies 3 days before, 91% 2 days before, 96% 3 days before the period is due. Over 300 urine samples were tested on 3 different batches of device.I’m a nurse and fertility educator. I’ve taught over 300 couples how to manage their fertility naturally using the Clearblue Fertility Monitor. In my view, it still remains the best, most reliable fertility monitor on the market. The Clearblue ® Digital Ovulation Test detects this rise LH, so you can identify your 2 best days to get pregnant. When can I take an ovulation test? Already made your choice? Clearblue monitors are easy to find. Just about every drugstore carries it … but they tend to be a lot cheaper online. Robinson J., et al. Increased pregnancy rate with use of Clearblue Easy Fertility Monitor. Fertility and Sterility. (2007) 87: 329–34.† aUsing the Clearblue® fertility Monitor to identify the most fertile days can help women get pregnant sooner than not using any method.

Ovulation results become clearer with our first Digital Ovulation Test, which gave you clear results with a simple smiley face. It tells you which days of your cycle are the most fertile, allowing you to time intercourse and optimize your chances of becoming pregnant. Tanabe K., et al. Prediction of the potentially fertile period by urinary hormone measurements using a new home-use monitor: comparison with laboratory hormone analyses. Human Reproduction. (2001) 16: 1619–24. † An accurate indication of when her period is due. It calculates the due day using previous cycle information and the timing of the LH surge in the current cycle (LH surge plus 15 days); if this information is not available it will estimate assuming a 28 day cycleClearblue ® has been a pioneer in pregnancy testing for over 35 years, and we have continued to innovate and create products to help women like you on their pregnancy journey. We’re proud of our long history, and we wanted to share some of our firsts from our Clearblue ® history. Advanced Digital Ovulation Test detects your 2 key fertility hormones – LH and estrogen – to identify your High and Peak fertility days. It typically identifies 4 or more fertile days in your cycle3, giving you more opportunities to get pregnant

The Clearblue® Fertility Monitor gives women comprehensive, personalized information that is unique to each cycle. It uses patented technology which has been developed into a unique dual-hormone assay for E3G and LH. 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. Another comparable option is the Oova monitor, which measures luteinizing hormone and progesterone (LH surges right before ovulation and progesterone rises after ovulation). Because the Oova monitor does not measure at estrogen levels, it cannot help women determine the beginning of the fertile time in the cycle. OvaCue 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.Tanabe K., et al. Prediction of the potentially fertile period by urinary hormone measurements using a new home-use monitor: comparison with laboratory hormone analyses. Human Reproduction. (2001) 16: 1619–24 Option to set a PIN which the user will be asked to enter each time the Monitor is switched on, this helps to stop other people accessing her personal data World Health Organization. Temporal relationships between indices of the fertile period. Fertility and Sterility. (1983) 39: 647–654. Clearblue has been a pioneer in pregnancy testing for over 30 years, and we have continued to innovate and create products to help women like you on their pregnancy journey. We’re proud of our long history, and we wanted to share some of our firsts from our Clearblue history. are taking antibiotics containing tetracyclines. Once you have finished your treatment you can start using the Clearblue Advanced Fertility Monitor at the beginning of your next cycle

The OvaCue Fertility Monitor has been around about as long as the Clearblue Monitor. The OvaCue monitor measures electrolyte changes in the saliva and cervical mucus that can change throughout a cycle, changes which rise and fall with a woman’s estrogen levels. Clearblue ® launches the world’s first dual-hormone Fertility Monitor to indicate all the fertile days of the cycle. You are advised to wait until you have had at least 2 natural menstrual cycles in a row (both lasting 23 - 37 days) if you have recently been: Interactive – dates of intercourse and levels of menstrual bleeding can be input and stored on the Monitor for future use

Unique - the only monitor to provide daily fertility status by measuring two urinary hormones – LH and E3G The Monitor will automatically set a testing window from 05.00 to 11.00 am (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.