No differences in the umbilical cord blood IL-6 levels between the women with and without oligohydramnios were identified [median 8.2 pg/ml (IQR: 3.8–147) vs. median 5.9 pg/ml (range: 2.1–27.9); p = 0.14; see Figure 1). Here, IL6 is linked to oligohydramnios.