About three days prior to ovulation the level of oestrogen increases dramatically and reaches its peak during the day of ovulation.
High levels of oestrogen result in a ferning pattern, which can be observed in a dried sample of saliva when viewed with a microscope.The OvuPlan Scope mini-microscope is a scientific instrument with a lens which magnifies your sample of saliva.
Re-usable
Saliva tests are ideal for women with irregular cycles as the device is reusable, meaning that you can continue to test every day of your cycle in order to detect your fertile period.