CCL2 and acute kidney injury: There was no significant elevation in serum (120.90 vs. 94.09, p = 0.1869) and urine (133.30 vs. 144.60, p = 0.7746) MCP-1 between leptospirosis-confirmed non-AKI and leptospirosis-unconfirmed non-AKI patients (Figure 3).