Malondialdehyde, a lipid peroxide, may be used as an indicator of oxidative stress. This study investigated the oxidative stress hypothesis in patients infected with Plasmodium vivax. Serum malondialdehyde (MDA) concentration activity was measured in 87 patients. Scores were obtained for the patients and 60 seronegative healthy controls matched for age and gender. The difference between MDA levels of patients infected with Plasmodium vivax and the control group was statistically significant both for females (p < 0. 001) and males (p < 0. 001). In the patient and control group, no correlation was found between age and malondialdehyde levels (p > 0. 05) in both females and males VSports手机版. In addition, no significant correlation could be found between MDA levels of both females and males for patients and control group (p > 0. 05). MDA levels were increased in the patients infected with Plasmodium vivax. .