- Women with steroid 5 alpha-reductase 2 deficiency have normal concentrations of plasma 5 alpha-dihydroprogesterone during the luteal phase. Milewich, L., Mendonca, B.B., Arnhold, I., Wallace, A.M., Donaldson, M.D., Wilson, J.D., Russell, D.W. J. Clin. Endocrinol. Metab. (1995)









