A 24-year-old female asked:
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what's a lutheal phase? and how would i know how many days? my cycle is usually 31-33 days.

1 doctor answer
Dr. Ted Anderson
27 years experience Gynecology
After ovulation: The interval between ovulation and the time you start your period is called the luteal phase because it is under the influence of Progesterone produced by the corpus luteum (what the egg follicle becomes after you ovulate). This is typically 14 days in a typical normal 28 day cycle. The timing and quality of the luteal phase can be tested by a Progesterone level and an endometrial biopsy.
Answered on Jun 30, 2014

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