The EC50 is determined by fitting a standard curve to the experimentally obtained control values for each dose response curve using some software that does trial and comparison until satisfactory(nonlinear regression).
In the literature, it is mentioned that experimentally obtained control values for the dose response curves, are EC50 reproducible. To my current understanding meaning that EC50's obtained for different for several dose response curves are actually 'close enough'(in some formal statistical sense) together. Is there some procedure or formula for formally establishing EC50 reproducibility?
Thank you :)