I saw alot of people saying it does'nt treat or diagnose an infection. Here's the thing, if you have symptoms, and your ph is normal, then it is something you can do over the counter as far as treatment. If your ph is high, then that means you need to see a doctor, find out exactly what it is, and get a script. I have used this product several times when I have had symptoms. All but one time my ph was normal, so I treated it like a yeast infection, and my symptoms went away. The one time my ph was high, it turned out I had group b strep, which needs a script for treatment. If you take this test, and your ph is'nt high, and you treat it over the counter, and that does'nt work, then you either caught something very early on that needs a script, or you have a bad yeast infection that needs more than just a over the counter treatment. I think 15 is worth this kit because these days i'll spend more than that on my co pay and gas.