Gut Testing
2 evidence-based articles
Compare at-home gut tests
These tests measure very different things — from microbiome sequencing to breath-based fermentation — and none of them are diagnostic. If you have persistent or alarming symptoms, see a doctor rather than relying on a home kit.
| Viome Gut Intelligence | Zoe | Thorne Gut Health | FoodMarble AIRE | |
|---|---|---|---|---|
| Sample | At-home stool kit | Stool + at-home blood-sugar & blood-fat tests | At-home stool kit | At-home breath device (reusable) |
| Measures | Microbiome activity via RNA (metatranscriptomic) sequencing → food & supplement scores | Microbiome plus your personal blood-sugar and blood-fat responses to foods | Microbiome composition and key markers, with a practitioner-style report | Hydrogen/methane from fermentation — to spot trigger foods & FODMAP tolerance |
| Turnaround | ~3–4 weeks | ~4–6 weeks | ~3–4 weeks | Real-time, at home |
| Price | ~$149–199 | Subscription (~$300+ to start) | ~$145 | ~$179 device |
| Best for | The most detailed microbiome readout | Personalized nutrition tied to real metabolic responses | A clinician-style report to share with a provider | Pinpointing your own trigger foods over time |
| We earn | 10-20%/sale | 10-20%/sale | 10%/sale | 10%/sale |
Try Viome Gut Intelligence We earn 10-20%/sale if you sign up · See all commissions | Try Zoe We earn 10-20%/sale if you sign up · See all commissions | Try Thorne Gut Health We earn 10%/sale if you sign up · See all commissions | Try FoodMarble AIRE We earn 10%/sale if you sign up · See all commissions |
Viome Gut Intelligence
Best for
The most detailed microbiome readout
Sequences the RNA activity of your gut microbes and turns it into personalized food and supplement scores. The deepest readout of the four — though independent validation of its specific recommendations is still limited.
We earn 10-20%/sale if you sign up · See all commissions
Zoe
Best for
Personalized nutrition tied to real metabolic responses
Pairs a stool test with at-home blood-sugar and blood-fat response tests to build personalized food scores. The most program-like option, grounded in the PREDICT research — but it's a paid subscription.
We earn 10-20%/sale if you sign up · See all commissions
Thorne Gut Health
Best for
A clinician-style report to share with a provider
A stool test that returns a practitioner-style report on microbiome balance and key markers. A reasonable middle ground on price and depth if you want something to review with a clinician.
We earn 10%/sale if you sign up · See all commissions
FoodMarble AIRE
Best for
Pinpointing your own trigger foods over time
A reusable breath tester that measures fermentation (hydrogen/methane) after meals to help identify trigger foods and FODMAP tolerance. A self-experimentation tool — not a diagnostic test for SIBO.
We earn 10%/sale if you sign up · See all commissions
Guides & reviews
Best At-Home Gut Tests of 2026: Viome vs Zoe vs Thorne
Viome, Zoe, Thorne, and FoodMarble compared — what at-home gut tests actually measure, their evidence limits, and who each suits.
Viome Gut Intelligence Review (2026): Is It Worth It?
An evidence-based Viome review: what the RNA stool test measures, the honest research picture on personalized nutrition, price, and who it's for.