Bioequivalence and Bioavailability Forum

Hi ceylan,

❝ For PK bioequivalence, 90% confidence interval is ok both for US and EMA.

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❝ For PD bioequivalence, I want to ask about the confidence interval for US and EMA?

❝ Is it 90% CI for US and 95% CI for EMA?

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❝ And in what circumstances, 90 % CI and / or 95 % CI are being used?

I think the question is a little too general.
Sometimes regulators want a 95% CI other times they want a 90% CI.
Here's a case of a 95% CI being used.
Here's a case of 90% CI being used.

Whatever you do, if you need PD I recommend to go for a scientific advice. Ask about 90% vs 95% if there is nothing written in a guideline. Don't make assumptions and don't take chances.