Secretory endometrium dating first correspondence online dating
Some pathologists refer to ovulation as “day 0” and report the postovulation day as the number of days after ovulation.
In one study, approximately 20% of fertile couples had a delay of more than 2 days.
In addition, the original description fixed the time of ovulation with the onset of the period after the biopsy.
The onset of ovulation can be more accurately determined using current modalities, such as determination of the midcycle urinary luteinizing hormone surge or ultrasonic identification of the collapse of a follicle.
For example, another assumption was that the length of the luteal phase is 14 days.
In reality, there is a normal variation in luteal phase length of several days.
For secretory phase endometrial dating, ovulation is used as the primary reference point.