I was taking antimicrobials recently but I really want to do a small intestinal bacterial overgrowth (SIBO) test, do I have to wait the whole 4 weeks?

If you've been taking antimicrobials recently but want to do a SIBO test now, it's best to wait the whole 4 weeks, but not crucial.

Ideally, you should stop antimicrobials for 4 weeks before taking the test and stop probiotics 48 hours before the test.

You have a choice to make, as there is no right answer.

If you decide to stop them for less than the 4 weeks, or not stop them at all, let us know as then we can take it into account when looking at your test results.


See the SIBO test instructions for more information on how to prepare.