Noteworthily, 1.43-fold higher mean WBC counts [18.0 (9.86) versus 12.6 (3.36) × 109/L, p = 0.0154] and 2.18-fold higher mean levels of CRP [211 (99.8) versus 96.8 (62.5) mg/L, p < 0.0001] were the only statistically significant differences between sepsis and SIRS besides more frequent tumor disease in SIRS. Here, CRP is linked to systemic inflammatory response syndrome.