PLOD1 and Infertility: However, no statistically significant difference was observed among three groups in these parameters: age, BMI, infertility etiology, basal estradiol and LH levels, amount of the FSH required for ovulation induction, FSH, estradiol ,LH levels after down regulation, estradiol, LH , progesterone levels, number of antral follicle and follicle (d≥14mm) on the day of hCG administration, preovulatory follicles, and number of retrieved oocytes (Table 2 and 3 ).