Recent studies found size differences in ovarian volume of 0.5 ml [7] and 0.8 ml [2] in infertile and normal women consistent with our result of a 0.6ml difference.

Why are my ovaries different volumes?

The variation in normal ovarian size results from the endogenous production of hormones, which varies with each menstrual cycle [21]. Ovulation and formation of the corpus luteum in the preceding cycle may influence the variation in ultrasound markers of ovarian reserve between the ovaries [5,22].

What is the normal volume of right and left ovaries?

During adulthood, ovaries reach an average size of 3.5 x 2 x 1 cm, equivalent to a volume of between 3 and 6 ml. Over time, the eggs in the ovaries decrease and ovulations eventually cease. At this point, the woman begins what is known as the menopause.