First: the study aimed to investigate the correlation of troponin, CRP, d‐dimer, white blood cell (WBC) and polymerase chain reaction–cycle threshold (PCR‐Ct) within COVID‐19 survivors (143 patients; 79 males, 64 females) and in deceased (30 patients; 12 males, 18 females) group. This evidence concerns the gene CRP and COVID-19.