GSTM1 and COVID-19: There was a positive correlation of WBCs, PT, APTT(r= 0.458, 526, 509) with D-Dimer and negatively correlated RBCS, Hb, CT (-0.056, 321, 526, 353), respectively at p < 0.001**.Thus, low platelet, high d-dimer, and fibrinogen may serve as risk markers for the progression of COVID-19 severity.