<b>Results</b>: The sFlt-1/PlGF ratio was significantly higher in women with preeclampsia compared with non-preeclamptic pregnancies (58.5 ± 17.3 vs. 34.6 ± 19.0; <i>p</i> < 0.001; Cohen's d = 1.31). The gene discussed is PGF; the disease is preeclampsia.