The mean level of PlGF was 38.6 ± 19.6 pg/mL in the preeclampsia group and 45.1 ± 24.0 pg/mL in the unaffected group, whereas the level of PAPP-A was 366.1 ± 195.3 mU/L in the preeclampsia group and 633.6 ± 496.9 mU/L in the unaffected group, showing a statistically significant difference of p < 0.01 for PlGF and p = 0.003 for PAPP-A, respectively. Here, PGF is linked to preeclampsia.