The analysis revealed that blood cortisol (OR = 1.007, 95% CI: 1.002–1.012, p = 0.003) and CRP (OR = 1.014, 95% CI: 1.002–1.026, p = 0.017) were two independent predictors of bacterial infection in DKA (Table 2). The gene discussed is CRP; the disease is bacterial infectious disease.