CAG repeat polymorphism in androgen receptor gene is not directly associated with polycystic ovary syndrome but influences serum testosterone levels

► AR gene CAG repeat length polymorphism in Croatian women with PCOS was studied. ► Polymorphism was found to be equally distributed between PCOS and healthy controls. ► Polymorphism positively correlates with total testosterone levels in PCOS group. ► CAG repeat polymorphism is not associated with hirsutism and acne status. ► Serum androgen levels are not significant predictors of hirsutism and acne status.