F2 and COVID-19: The relationship between prothrombin time and the incidence of COVID-19 in the DM and non-DM groups is in line with several studies.17 The prothrombin time values in both groups were relatively the same and did not prolong.12 The prothrombin time values were almost the same in both groups and within the normal range.10 In contrast to a study that showed a slight difference in the prothrombin time value in the diabetic group, which was prolonged compared to the non-diabetic group, which was still within normal limits.18