ALB and acute kidney injury: Transmembrane fatty acid transporter-2 (FATP-2) exclusively expressed on the apical side but not on the basolateral side of tubules mediates the uptake of fatty acid-bound albumin.75 Besides transporting proteins, the TECs can also uptake the fatty acids-bound albumin through endocytosis.27 Kidney injury molecule (KIM)-1 is a well-known tubular injury factor for both acute kidney injury (AKI) and CKD.