Background: Nandrolone decanoate (ND) is a doping agent which is used by athletes and has a lot of adverse effects on the body. Objectives: This survey was carried out to evaluate the effects of subacute supraphysiological dose of ND administration on liver enzymes and lipid profiles in male and female rats. Materials and Methods: This experimental study was performed on 40 Wistar-Albino rats, which after weighing divided into 4 groups as control (female and male) and test (female and male) groups (N = 10). The test groups received 15 mg/kg nandrolone decanoate by intra muscular (im) injection for 2 weeks, but control groups received the same volum of oil vehicle. At the end, animals were deeply anesthetized by diethyl ether, scarified and their blood samples were collected. Liver enzymes and lipoproteins were measured by usual methods. Obtained data were analyzed by SPSS-15, applying ANOVA and Tukey tests. Results were expressed as mean ± SD. Statistical difference was recognized significant by P ≤ 0.05. Results: Results showed that AST value in the test groups were significantly increased compared to those of the control groups. In addition, HDL and cholesterol values in female test group were significantly increased compared to those of male test group. Moreover, final weight, food, and water intake in all test groups were significantly increased compared to those of control groups. Conclusions: These results indicated that subacute administration of nandrolone decanoate alters liver enzymes, lipoprotein profile, final weight, food, and water intake in rats. The exact mechanism needs future studies.