ALB and macrophage activation syndrome: Regarding laboratory changes, according to Buda et al., median lymphocyte (0.74 vs. 1.16 × 103/μL) and platelet (140 vs. 188 × 103/μL) counts, albumin (3.1 vs. 3.4 g/dL), and sodium (132 vs. 135 mmol/L) levels were much lower in MIS-C patients with MAS than in patients in the non-MAS group.