What is a luteal phase defect?


A luteal phase defect (LPD) is an abnormally short luteal phase (time from LH surge to menses) of less than 13 days (Speroff- Clinical Gynecologic Endocrinology and Infertility 7th edition page 1036).

A luteal phase defect is usually due to low levels of progesterone production from the corpus luteum and is a form of ovulatory dysfunction.

The corpus luteum is the structure or cyst that is left behind in the ovary after the egg ovulates from the ovary during midcycle. Its job is to produce progesterone which is a hormone that supports the endometrium or lining of the uterus and it supports the pregnancy until the placenta takes over between 10 and 12 weeks of gestation.

Related Q&A:
Does a luteal phase defect impact getting pregnant?

Related Calculator: Luteal Phase Calculator - check the length of your luteal phase.

MyMonthlyCycles Members: If you're tracking your fertility cycle, easily review your luteal phase length with the Luteal Phase Report.

Wendy Fried, M.D., FACOG, FACS, is an OB/Gyn with Northern Obstetrics and Gynecology, PC in North Hills, New York

Disclaimer: The information provided in this document is for educational purposes only. It is not medical advice and is not intended as a substitute for medical advice. Only your own physician knows all the important details of your specific medical and personal history and should be the only one to give you advice regarding your own medical care. You should never disregard medical advice or delay seeking medical advice or treatment because of something you have read herein. If you have any questions whatsoever about your medical health or believe you have a medical problem or disease, you should contact your medical doctor or healthcare provider.