Initial laboratory tests revealed leukocytosis (WBC 21,600/μL; band 3%, segmented neutrophils 86%), elevated C-reactive protein (CRP 33.1 mg/dL), procalcitonin 3.4 ng/mL, anemia (Hb 9.6 g/dL), and acute kidney injury (Cr 1.4 mg/dL, baseline ~1.0 mg/dL). Here, CRP is linked to anemia (phenotype).