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What is the middle luteal phase?

By Silvia Azaña Gutiérrez B.Sc., M.Sc. (embryologist).
Last Update: 03/27/2024

Mid-luteal phase refers to the time when a woman is in the middle of the luteal phase.

In a typical 28-day menstrual cycle, the luteal phase extends from day 14 to day 28. Therefore, a woman will be in mid-luteal phase on day 21 of her menstrual cycle.

It is at this time that progesterone levels are determined from a blood test, which can help assess whether or not the woman has ovulated in that menstrual cycle.

 Silvia Azaña Gutiérrez
Silvia Azaña Gutiérrez
B.Sc., M.Sc.
Embryologist
Graduate in Health Biology from the University of Alcalá and specialized in Clinical Genetics from the same university. Master in Assisted Reproduction by the University of Valencia in collaboration with IVI clinics.
License: 3435-CV
Embryologist. Graduate in Health Biology from the University of Alcalá and specialized in Clinical Genetics from the same university. Master in Assisted Reproduction by the University of Valencia in collaboration with IVI clinics. License: 3435-CV.