From: Measurement of luteinizing hormone surge in vaginal discharge: a potential biomarker that enables simple, non-invasive prediction of the periovulatory period
Timing of vLH surge
Number of cycles
Ratio
-5
7
24%
-4
4
14%
-3
2
7%
-2
8
28%
-1
3
10%
ovulation day
others
Total
29
100%