Abstract Background Abnormal inflammation coagulation biomarker levels of troponin, C‐reactive protein (CRP), and D‐dimer levels in serum have been demonstrated to be associated and involved in the disease progression of coronavirus disease 2019 (COVID‐19). Methods 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. Also, assessing any differences between both groups in studied parameters. Second: a correlation study of studied parameters' level has been conducted within families (41 patients; 23 males [seven deaths] and 18 females [eight deaths]) that lost more than one member due to the severity of the disease. Also, differences between these family and control group (132 patients; 69 males and 63 females) group in studied parameters have been assessed. Results In the first week of hospitalization, there were significant differences in D‐dimer, CRP and troponin level between survived and deceased patient groups. In the second week of the admission, both groups had significant differences in the level of all studied parameters; troponin I, D‐dimer, CRP, and WBCs. WBC levels positively correlated to CRP in male survivors (r = 0.75, p
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