Background: Polycystic ovary syndrome (PCOS) is a heterogeneous, multifactorial endocrinopathy in women of reproductive age characterised by the ovarian manifestation of multiple metabolic abnormalities primarily anovulation, hyperandrogenism, and/or polycystic ovary shape. Aim: To assess the relation between body mass index and serum lipid profile and the relation between body mass index and serum testosterone in PCOS women and to correlate body mass index, serum lipid profile and serum testosterone in women with PCOS. Methodology: Population based cross-sectional study carried out in a tertiary care hospital among 100 consecutive women diagnosed as having PCOS in the reproductive age group. The biochemical estimation of the lipid profile was done using digital Photocolorimeter and the estimation of serum testosterone was done in Minividas machine. Results: There is a highly significant difference in BMI level between the Lean and Obese PCOS women with p<0.01. The obese PCOS category of women has lower mean score of the parameter High Density Lipoprotein than their lean counterparts. There was a highly significant difference in Triglyceride level between the Lean and Obese PCOS women with p<0.01. In the parameter Testosterone (ng/ml), though the mean scores of both the groups are found to be slightly higher than the normal value but, the difference is not statistically significant (p>0.05).