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family of ovulation prediction products, since 1983.

"I was on birth control for ten years. I went off them and began having irregular periods. After three months of using the OvaCue, I am now 11 weeks pregnant. This product is amazing!" -- G.W., Garland TX (more)

Know your body!

Only the OvaCue Fertility Monitor predicts ovulation through direct measurement of electrolytes in saliva. No other device is as accurate.
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Fertility and Conception —>

Ovulation prediction basics

Release of the ovum or egg is called ovulation. Once the egg is released from the ovary and matures in the fallopian tube, it will survive and be able to be fertilized for a very short time, at most about 24 hours and perhaps as little as 8 hours. The other half of the conception process is the sperm. Healthy sperm can fertilize an egg for about 48 hours or more after being deposited, but it requires up to 24 hours to reach the egg.

Clearly, sperm must be deposited at the right time to have a good chance of conception. But how do you identify that moment of peak fertility? Fortunately, Zetek discovered a way, measuring electrolytes in saliva.

Your body prepares for ovulation with complex changes in the output of hormones. About a week before ovulation, a threshold of increasing amounts of estrogen is reached. At this time, one ovum is selected from among the many available in one of the two ovaries. This one ovum begins to grow and the uterus begins to be prepared to receive a possibly fertilized egg.

At the same time, other hormones are changing the amounts of minerals like sodium and potassium (electrolytes) that are kept or discarded by the body. This is what produces the Cue Peak, a high point in the salivary readings of electrolytes that corresponds to the release of an egg.

The OvaCue Fertility Monitor stores this information about your body and uses the patterns to accurately predict your time of ovulation up to seven days in advance, telling you exactly which day is best to conceive your baby.