CRP and Increased total leukocyte count: Laboratory tests revealed leukocytosis (11,880/μL, neutrophils 75.6%), increase of erythrocyte sedimentation rate ([ESR] 36 mm/h), α2-globulins (1.08 g/dL), C-reactive protein ([CRP] 2.4 mg/dL), and ACPAs positivity (>250 U/mL).