Sepideh Hajian 
1 
, Nafiseh Rastgoo 
2*  1
1 Department of Nephrology, Velayat Hospital, Qazvin University of Medical Sciences, Qazvin, Iran
2 Student Research Committee, Qazvin University of Medical Sciences, Qazvin, Iran
        
	
        
        
Abstract
            Hemoperfusion is an effective modality in removing certain toxins from the blood, especially those that bind  to proteins in the body. Hemoperfusion has shown a therapeutic effect on COVID-19 patients. In this case  series, we report four patients without effective results following the use of hemoperfusion on the recovery of  COVID-19 patients. This study is a case series which carried out on four patients referred to COVID-19 ward  of Velayat hospital in Qazvin, Iran. The mean age of the COVID-19 patients was 52.75 ± 18 years. The mean  stay at the hospital was 21.5 ± 15.15 days. This study showed that hemoperfusion cannot show a significant  therapeutic effect on COVID-19.