Microbiome Testing: How to Choose the Right Test

Improve Gut Health Editorial Team • Feb 21, 2026 • 6 min read

Not all gut tests answer the same question. This guide helps match symptoms to practical testing pathways.

Quick answer

Choose testing based on the question you need answered. Breath tests can help with fermentation patterns like SIBO suspicion, stool tests can help with inflammation/pathogen clues, and blood tests can rule out systemic contributors.

  • Test for a decision, not for curiosity.
  • Use one or two high-value tests first.
  • Re-test only if it changes treatment decisions.

Medical disclaimer: Educational content only. Work with a clinician for diagnosis and interpretation.