Further post hoc analysis showed that the intralipid infusion suppressed the plasma concentration of FGF19 in both control (P < 0.01) and PCOS (P < 0.0001) to 50 and 39% of baseline at 60 min, respectively; and the levels remained suppressed during insulin infusion at 300 min (Table 2). Here, INS is linked to polycystic ovary syndrome.