Fig. 9From: A sensitive chemiluminescence based immunoassay for the detection of cortisol and cortisone as stress biomarkersCalibration curve of a cortisol and b cortisone standard solutions with concentrations from 0 to 50 ng ml−1. Standards plotted against the ΔRLU (relative light unit) emission response, insert in the figure a CL image of each standard cortisol solution.Back to article page