CRP and COVID-19: Laboratory results showed WBC 14.8 K/μl, Hgb 11 g/dl, PLT count 250,000 cell/mm3, MCV 90.6 fl, neutrophil 70.9%, lymphocyte 27.2%, eosinophil: 1%, CRP:42.7 mg/L, urea 46 mg/dl, Cr 1.4 mg/dl, blood and sputum culture: negative, procalcitonin: negative, CKMb: negative, COVID‐19 PCR (two times with the interval of 48 h): negative, ANA: negative, complements: normal.