Hi Trevor,

I know this a "bit" late as a reply. But I hope this can help you and others who landed here. We have a FREE, easy to use online tool for ELISA analysis at www.readerfit.com. It is able to fit your standard curve with 4-parameter logistic and 5-parameter logistic as well. If you come to our site, we have great email/live support where we can walk you through a typical analysis.

Charles Ma
Technical Support
Hitachi Solutions America, Ltd.
MiraiBio Group
Website: http://www.MiraiBio.com

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