Medical Scientists have observed women's ovulation cycles by means of saliva crystallization. After all, it had been confirmed that saliva sampled during fertile periods looks like the frost on window during winter due to the effect of hormone.

Features of Lady-Q Ovulation Predictor Test System:
   - Durable metal outer tube (not plastic)
   - Simple and convenient, take anywhere test
   - Easy test for ovulation phase saliva ferning
   - Promote or prevent pregnancy
   - Compact lipstick sized easy carrying
   - Powerful 60X magnification microscope
   - It Only takes 5 minutes to do the test
   - Replaceable button cell batteries
   - Reusable
   - Bright long lasting (LED) light source
   - Easy to understand guide to operation and theory