Fig. 2

Maternal serum PFAS concentrations at Visit 1, 2, 3, and 4 presented as geometric mean with 95% confidence intervals. Visit 1: Gestational age week 6 + 1 to 15 + 0. Visit 2: Gestational age week 28 + 0–6. Visit 3: Gestational age week 34 + 0–6. Visit 4: Delivery, gestational age week 32 + 1 to 42 + 0. PFAS; Per- and polyfluoroalkyl substances, PFOS; perfluorooctane sulfonic acid, PFOA; perfluorooctanoic acid, PFHxS; perfluorohexane sulfonate, PFNA; perfluorononanoic acid, PFDA; perfluorodecanoic acid, PFUnDA; perfluoroundecanoic acid. Figure created with BioRender