With this study, of the patients with COVID-19 who we followed in our region and divided into 4 groups according to their clinical status, we aimed to determine the effect of hematological and biochemical markers such as PCT, erythrocyte sedimentation rate (ESR), CRP, lymphocyte count, neutrophil count, D-dimer, Lactate dehydrogenase (LDH), troponin, albumin, and platelet (PLT) on prognosis. Here, CRP is linked to COVID-19.