Review timelines for FDA 510k clearance

How long does it take from FDA submission to clearance?
Let's look at the recent data.

The 510k database can be exported and analysed. Format is not humanly readable but makes a fun ChatGPT exercise.

Here is the result of me playing with the database from devices cleared last months (Aug and Sep 2025).

❗ The normal distribution appears to peak around 90 days, the legal obligation for FDA to respond to submissions. Around 30% of submissions were cleared within that timeframe.
❗ Nice peak at 30 days - but don't be too wishful! These are expedited reviews, e.g. changes to existing 510ks or based on prior agreements or expected updates.
❗ Less exciting peak around 270 days, i.e. 9 months. Most submissions receive an Additional Information request, which gives manufacturers 180 days to respond and restarts the clock for FDA after that (further 90 days).

Lesson here?
If you're planning a 510k, a realistic estimate for clearance is nothing less than 6 months. This is what applied to 2/3s of the 400+ applications cleared most recently.

Good quality submissions and preliminary discussions with FDA on the fundamental topics can help prevent Additional Information requests and thus increase the chances of receiving clearance within 90 days.

Does your experience confirm this too?

I will dig more into this database in the coming posts with more insights.