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Make sure you pick the form of the equation to match the data you are analyzing. The uncertainty in the value of the EC50 or IC50 is usually quite asymmetrical.

https://www.graphpad.com/guides/prism/latest/curve-fitting/

Does it make sense to use ANOVA multiple comparison tests to compare two dose-response curves at every dose (or two time course curves at every time point)?

https://www.graphpad.com/guides/prism/latest/statistics/

With different kinds of variables, this variable is sometimes called ED50 (effective dose, 50%), or IC50 (inhibitory concentration, 50%, used when the curve ...

https://www.graphpad.com/guides/prism/latest/curve-fitting/

The mid-point of dose-response curves is quantified as the EC50, often expressed as its logarithm. (This midpoint is sometimes called the IC50 or ED50). First ...

GraphPad FAQs

With different kinds of variables, this variable is sometimes called ED50 (effective dose, 50%), or IC50 (inhibitory concentration, 50%, used when the curve ...

https://www.graphpad.com/guides/prism/latest/curve-fitting/

Relative vs absolute IC50; Fitting the absolute IC50; Incomplete dose-respone curves; Troubleshooting fits of dose-response curves. Dose-response - Stimulation ...

https://www.graphpad.com/guides/prism/latest/curve-fitting/

Relative vs absolute IC50; Fitting the absolute IC50; Incomplete dose-respone curves; Troubleshooting fits of dose-response curves. Dose-response - Stimulation ...

https://www.graphpad.com/guides/prism/latest/curve-fitting/

You need to decide when those likelihood are far enough apart that you will believe the parameters are different. Keywords: EC50 IC50 ED50 logIC50 logED50 log ...

GraphPad FAQs

Relative vs absolute IC50; Fitting the absolute IC50; Incomplete dose-respone curves; Troubleshooting fits of dose-response curves. Dose-response - Stimulation ...

https://www.graphpad.com/guides/prism/latest/curve-fitting/

This is a very common value to calculate in toxicology. In other dose-response type relationships, this value may also be referred to as the EC50 or IC50, ...

https://www.graphpad.com/guides/prism/latest/curve-fitting/