PGF and polycystic ovary syndrome: PlGF bioavailability in follicular fluid was significantly greater (2-fold) in PCOS women compared with non-PCOS controls (0.022 vs. 0.01, respectively, p < 0.01) (Figure 2).Pearson correlation analysis was performed to evaluate for correlations between PlGF or sFlt-1 concentration and various stimulation cycle parameters.