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How many follicles does each ovary normally have?

There are different tests to evaluate a woman’s ovarian reserve, but those with the highest predictive value are the antral follicle count and hormone profile.

The antral follicle count consists of an ultrasound at the start of the cycle in which the number of follicles in the ovaries are counted, sized between 2 and 9 mm. If a number equal to or higher than 8 is observed, this is usually indicative of a good ovarian reserve. The more antral follicles we see, the better the ovarian reserve to be expected.