FABP4 and hydrops fetalis: As shown in Figure 2, the FABP4 levels were significantly higher in women than in men, for both HF subjects [43.6 μg/L (25.2–91.8) versus 27.6 μg/L (17.3–47.7), respectively, p=0.001] and non-HF subjects [31.6 μg/L (23.1–41.6) versus 22.5 μg/L (16.2–32.2), respectively, p<0.001].