I was looking around on youtube and found this video. This is a product called Fertility Scope, which would be a fertility test you use saliva for rather than urine. The major upside to this would be that you only buy the product once, and it can be used over and over again. I decided to look up similar products on Amazon.com and found saliva ovulation microscopes that look like lipstick cases, they're the same thing as this product and actually cost less. I honestly couldn't find anything called a Fertility Scope when I looked, though I haven't really looked too hard. The lowest price I've found so far is about $23 give or take. It could potentially save you a lot of money, and all you'd have to do is look for cells that look crystallized as the estrogen in the saliva tends to appear crystallized. It's worth a consideration for those of us trying to get pregnant, or even for a person that is trying to prevent a pregnancy.