FN1 and endometriosis: Receiver operating characteristic (ROC) curve analysis of plasma FN concentration and the relative amount of the FN dimer (500 kDa) and FN-fibrin complex (750 kDa) band in the endometriosis vs. normal groups identified parameters, with a sensitivity and specificity of 0.722, 0.868 and 0.805, respectively (Table 3).