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Taking conception to the next level, the Clearblue® Fertility Monitor maximizes a woman’s chances of conceiving a baby by identifying 3x more fertile days compared to traditional ovulation tests. The #1 brand recommended by OB/GYNs, this electronic, hand-held monitor tracks a woman’s personal cycle, detecting two key ovulation hormones: luteinizing hormone (LH) and estrogen. Using the two hormones, the device can pinpoint not only a woman’s 2 peak fertility days, but also 1-5 additional high fertility days prior to ovulation – for a total of up to 6 fertile days.
There are only a few days per cycle when a woman is fertile and can conceive. The following chart outlines the phases of a woman’s menstrual cycle, showing how the two most fertile days coincide with the LH surge (24-36 hours before ovulation) and the release of an egg (ovulation). These are a woman’s 2 best days to conceive a baby.
However, it is generally acknowledged that sperm can survive up to 5 days in the sperm-supportive mucus found in a woman’s body during the fertile days of her cycle meaning there is a fertile window of typically up to 6 days: 5 days before ovulation plus the day of ovulation. Traditional ovulation tests like Clearblue Digital Ovulation Test track the LH hormone and identify a 2 day window of fertility. But the Fertility Monitor also tracks estrogen levels, which rise just before the LH surge, extending the fertile window typically up to 6 days. This extended window can help to reduce the time it takes to conceive2 as it gives more days to try, plus gives advance notice of the 2 peak days.
The Fertility Monitor is easy to use and gives you clear accurate results.
Low fertility = very small chance of conceiving
High fertility = increased chance of conceiving
Peak fertility = highest chance of conceiving
When you’re ready to test for pregnancy, choose a brand and product you can trust. In the Clearblue Pregnancy Test Buying Guide, we outline the different features of pregnancy tests so you can feel maximum confidence throughout the entire conception process.
As the diagram above illustrates, timing is key when trying to conceive a baby. While there are manual charting and calculator methods that may be used to predict ovulation, these methods often fall short. They require tracking a woman’s typical cycle length over several months. However, every woman’s cycle is unique and cycles for any one woman can vary from cycle to cycle – making calendar-based predictions unreliable prediction as well as time-consuming. That’s why Clearblue provides a range of products to help predict ovulation without months of charting. You can learn more about predicting ovulation and which method is right for you in our Ovulation Test Buying Guide.
1 Behre HM et al. Prediction of ovulation by urinary hormone measurements with the home use Clearblue Fertility Monitor: comparison with transvaginal ultrasound scans and serum hormone measurements. Human Reproduction 2000;12:2478-2482.
2 Robinson JE and Ellis JE. Mistiming of intercourse as a primary cause of failure to conceive: results of a survey on use of a home-use fertility monitor. Curr Med Res Opin 2007;23(2):301-6.
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I have an irregular 29-36 day cycle and found it difficult to pinpoint ovulation. TTC for 3 months, and have used the CBFM the last two months. Read morePublished 16 days ago by Vanessa
I like this product it seems pretty accurate and is simple to use. Hoping for a baby bump soon. Remember to purchase the testing sticks at the same time.Published 18 days ago by Dominique Hall
I used this monitor when trying to get pregnant. It is very sensitive and you need to follow the directions exactly in order to get true results. Read morePublished 20 days ago by Erin
I ordered this product on March 27th 2012. We conceived our beautiful son the following month. He was born January 2013 and is now one year old. Read morePublished 28 days ago by Mary Bluma
Just like so many other people here, I too have a monitor that has proven defective. The test strips are cheaply made and foggy, you don't need an electronic eye in order to see if... Read morePublished 1 month ago by Amanda Suzzanne Massie
My husband and I had been trying to conceive for about 6 months with no luck. Although it had only been a few months, it was frustrating for both of us. Read morePublished 1 month ago by LPOPE
I ordered the Clearblue Fertility Monitor after trying for almost a year to conceive. I'd been using OPKs every month but still seemed to be missing the perfect time of the month... Read morePublished 1 month ago by J. Moran
I promised myself if I ended up pregnant from using this monitor I would come back and write a review since I read every single one before I purchased this monitor. Read morePublished 1 month ago by DocStephens
This is an fyi for all women (and men who are helping their women) out there to beware of used fertility monitors. Read morePublished 2 months ago by Nadmansourou