FABP4 and Insulin resistance: Adipokines could be regarded as biomarkers for insulin resistance, including adiponectin, RBP4, chemerin, and adipocyte fatty acid-binding protein (A-FABP) (Huang et al., 2013; Li et al., 2018; Li X. et al., 2019; Frithioff-Bojsoe et al., 2020).