Laboratory tests showed leukocytosis of 14 600 μl of white blood cells (WBC), elevated C-reactive protein (CRP) of 18 μg/ml (normal <0.3 μg/ml), and an elevated erythrocyte sedimentation rate (ESR) of 18 mm/h (normal <15 mm/h). Here, CRP is linked to Increased total leukocyte count.