FABP4 and hydrops fetalis: Adiponectin and A-FABP concentrations were also significantly higher in the patients with HF (HF vs. non-HF: median level, adiponectin, 12.1 vs. 6.5 mg/L, P < 0.0001; A-FABP, 34.8 vs. 21.0 ng/mL, P < 0.0001).