FGF21 and type 2 diabetes mellitus: In the patients with T2DM, the levels of plasma FGF21 were significantly higher than in those without T2DM [46.6 pg/mL (interquartile range, 28.2 pg/mL to 125.1 pg/mL) vs. 38.1 pg/mL (interquartile range, 17.6 pg/mL to 84.1 pg/mL), p = 0.035; Fig. 2].