The increase in estrogen levels as ovulation approaches triggers an increase in the concentration of electrolytes in the saliva. For this reason, when a drop of saliva from the periovulatory period crystallizes, a very characteristic fern-leaf pattern will appear.
The saliva ovulation test, being like a small microscope, allows the woman to observe these changes in saliva crystallization.
Read the full article on: Saliva ovulation tests: How are they used and are they reliable? ( 73).
By Laura Rollán Guilén B.Sc. (embryologist), Silvia Azaña Gutiérrez B.Sc., M.Sc. (embryologist) and Michelle Lorraine Embleton B.Sc. Ph.D. (biochemist).
Last Update: 07/14/2022
