Antral follicle count is a significant predictor of livebirth in in vitro fertilization cycles.

In the first published demonstration that the antral follicle count (AFC) predicts live birth after in vitro fertilization-embryo transfer (IVF-ET), we found that an AFC of >or=11 was a strong positive predictor of live birth. The AFC should not be used to exclude women from IVF treatment; however, it is a very useful instrument for patient counseling and determining appropriate treatment protocols and gonadotropin dosing in IVF cycles.