Click here for larger image Retail Price: $33.50 Your Price: $29.50 Quantity:   Total Price: $          New Ovulation Prediction Biotester on Market - QTEST?. 1 Year full warranty *. It is a small microscope that could show to you structure of woman body physical liquids, like saliva or vaginal liquid. You can see three different results: Fertile Period, Non-Fertile Period, and Transitional Period.