LBP and polycystic ovary syndrome: In the lean group, the serum LBP level was significantly higher in PCOS than in controls (28.47±11.09 vs. 24.22±10.33 μg/ml, p = 0.005) (Fig 1), whereas the M value (9.71±2.58 vs. 12.31±1.72 mg/min/kg, p<0.001) was significantly decreased in PCOS.