In a normal 28 days menstrual cycle when would you expect the LH surge to occur?

Correct answer: B. Days 11-14

  • A. Days 7-10
  • B. Days 11-14
  • C. Days 15-18
  • D. Days 19-22

Explanation

Ovulation falls at about day 14, and the LH surge precedes it by roughly a day, so it lies in the window from day 11 to 14. The luteal phase after ovulation is the fixed part of the cycle at about fourteen days, which is why counting back from the next expected period is the reliable method. Days 15 to 22 fall after ovulation, when progesterone dominates.

This question appeared on the UHS MDCAT 2025 paper, which you can sit online with every answer explained.

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About Menstrual Cycle

The menstrual cycle covers the coordinated changes in the ovaries and uterus, including menstruation, follicular growth, ovulation and corpus luteum formation. It links follicle-stimulating hormone, luteinizing hormone, oestrogen and progesterone with endometrial changes, and distinguishes the ovarian cycle from the uterine cycle and the hormonal events of pregnancy.

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