Abstract
            Introduction: As diabetes is highly prevalent worldwide, understanding particular dimensions of COVID-19  infection in diabetic patients is of significant importance.  
  Objectives: The present research aimed to evaluate the outcome of diabetic patients with COVID-19 infection,  and the clinical and biochemical characteristics in survived and non-survived patients.  
  Patients and Methods: The present single-center, cross-sectional study examined laboratory and clinical features  of 160 patients with diabetes who had moderate to severe criteria. The obtained data were categorized as survived  or non-survived patients and then we compared the clinical characteristics in two groups.  
  Results: In this study, 160 diabetic patients (75 men and 85 women) admitted with moderate to severe Covid-19  were evaluated. The mean age of studied patients was 51-90 years old, with diabetes duration of 5 to 15 years.  One hundred thirty-one patients (81.9%) survived, but twenty-nine patients (18.1%) did not survive. Regarding  the comparison of symptoms, only the loss of consciousness on admission was higher in non- survived patients;  however, a majority of the non-survivors have been admitted to ICU, 23(79.3%) and 26 (89.6%) needed invasive  mechanical ventilation; in comparison to survived patients also had a shorter duration of hospital stay (5.5±5.1  versus 8.4±6.1days). Non–survivors more probably suffer from high blood pressure [23 (79.3%) patients versus  80 (61%) patients] and chronic kidney disease [20 (69%) patients versus 9 (6.9%) patients; P<0.001]. Glycated  hemoglobin (HbA1c) of more than 9%, and high fasting blood sugar, severe inflammatory response, hepatic,  renal, and coagulation impairment was higher in non–survived than those who survived.  
  Conclusion: Multifactorial parameters result in the poor prognosis in diabetic patients; therefore, it is critical for  identifying the key clinical, as well as laboratory characteristics of COVID-19 cases that lead to severe disease  and increase the risk of death.