Median serum NGAL concentrations in the septic group were significantly higher than in the sick non-septic and uncertain sepsis status groups (p = 0.004) There was little concentration overlap between sick non-septic foals and septic foals, but considerable overlap between septic foals and foals with uncertain sepsis status (Table 2 and Fig 1). This evidence concerns the gene LCN2 and Sepsis.