If you've done any research at all on the OvaCue Wireless Fertility Monitor, you have probably read that the OvaCue has been clinically proven to be 98% accurate in monitoring ovulation (based on studies from the National Institute of Health). So, what exactly does that mean? To give these statistics a "real life" perspective, we decided to put the OvaCue up against the transvaginal ultrasound to help showcase its accuracy in a different way. Transvaginal ultrasounds are the most accurate way to pinpoint the exact date of ovulation, as it makes it possible to visually monitor the development of the dominant follicle until it is released from the ovary and into the fallopian tube.\nSarah, Director of Social Marketing and Customer Service at Fairhaven Health, uses the OvaCue daily and blogs about her experience at OvaCue.com. Some of you may know her as "FertilityChartingWithSarah" at OvaGraph.com, and others of you may know her from corresponding with her about OvaCue customer service questions. Sarah has always been interested in female reproductive health and ovulation prediction, so she jumped at the chance to monitor an entire cycle with a series of transvaginal ultrasounds to predict and confirm when ovulation took place. She continued to use the OvaCue Fertility Monitor (oral and vaginal sensor) daily while also going to a fertility clinic for regular transvaginal ultrasounds. What did she find? Read the results here!