The portion of the normal menstrual cycle from ovulation until the day before the next flow. A normal luteal phase is 10 days or longer (assessed by quantitative basal temperature methods) or 12 days or longer from the LH peak at midcycle. The length of the luteal phase is roughly proportional to the amount of progesterone in the cycle.
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Help for Anovulatory Androgen Excess (AAE)—Challenge PCOS!
Daily Progesterone therapyFertility -
Ovarian Hormone Therapy for Women with Early Menopause
Common Menstrual ConcernsCramps and painful periods -
Stopping Estrogen Treatment (Sometimes called “HRT”)
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Young Women and Osteoporosis — Good news about treatment and prevention
Breast tenderness & lumpsCommon Menstrual Concerns -
The Death of Hormone Replacement Therapy — Why and how to use Ovarian Hormone Therapy
Breast cancerDaily Progesterone therapy -
How Can I Tell I Am in Perimenopause?
Breast tenderness & lumpsCommon Menstrual Concerns -
Perimenopause – women’s misunderstood, confusing, and long midlife transition.
Breast cancerBreast tenderness & lumps -
Ovulatory Disturbances: They Do Matter
Basic Physiology / HormonesBreast tenderness & lumps
Glossary
Visit the Glossary to learn more about the specific terms used on this website.
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Luteal phase
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Luteal Out of Phase Event (LOOP)
This is a newly discovered peculiar change of hormonal patterns within usually a normal-length menstrual cycle in perimenopausal women. It means that in the middle of the luteal phase when progesterone and estrogen should still be high-normal, there is a second midcycle estrogen peak that often ends up around the same time as the start of the next menstrual flow. High estrogen at the time of flow is one thing associated with very heavy bleeding in perimenopause.
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