PLOD1 and Infertility: The duration of infertility (OR 1.206, 95% CI 1.04–1.40, P = 0.013), basal FSH value (OR 0.74, 95% CI 0.41–1.14, P < 0.05), grouping (dydrogesterone) (OR 0.26, 95% CI 0.12–0.55, P < 0.01), and grouping (progesterone) (OR 0.08, 95% CI 0.03–0.23, P < 0.01) were independently associated with low LH levels on the trigger day (Table 4).