Diabetes mellitus (DM) is a metabolic disease accompanied by high blood glucose due to a defect in insulin secretion, insulin activity, or both. High blood glucose levels may lead to serious damage to some organs of the body, mainly blood vessels and nerves. Therefore, this study was conducted to evaluate prothrombin time (PT) and activated partial thromboplastin time (APTT) in diabetic patients. 100 venous blood samples were collected from diabetic patients attending the diabetes clinic in Sebha. Of them, 57 were males and 53 were females, and their ages ranged between 15-88 years. out of 100, 48 Were treated with insulin-regulating tablets and 52 Were treated with insulin injections. 34 blood samples were collected from healthy people (15 females and 19 males). They were used as a control group, aged between 14-55 years. 4 ml of venous blood was drawn, and 2 ml was placed in containers containing the anticoagulant sodium citrate to perform the PT and APTT. Place 2 ml of sample in tubes containing sodium fluoride anticoagulant to perform a fasting blood sugar (FBS). Place the tubes in a centrifuge at 3000 rpm to obtain plasma. The results showed the mean of PT in patients was (19.4 ± 3.6), the mean APTT was (35.9 ± 1.5) and the Mean FBS was (229.7 ± 80.39), whereas the mean PT, APTT, and FBS in control were (12.8 ± 1.6), (25.4 ± 2.1), and (91.9 ± 12.5) respectively. there was a significant increase of PT and APTT in patients compared to control (P<0.05), PT and FBS were higher in patients who used insulin injection with significant differences(P<0.05), while no significant differences were in APTT (P > 0.05). The present study observed a statistically significant increase in PT and APTT among patients compared to controls, it would be helpful to incorporate coagulation screening as a routine investigation for the better management of diabetic patients.