A statistically significant positive co-variation was found between LH and progesterone, seen in both groups, PCOS p = 0,001, 0,02 (95% CI: 0,01; 0,03) and controls p = 0,001, 0,26 (95% CI: 0,11–0,40). Here, PLOD1 is linked to polycystic ovary syndrome.