Spot hydrogen breath test for predicting response to low fermentable oligo-, di-, monosaccharides, and polyols (FODMAPs) dietary advice in patients with bloating

Status

Active, not recruiting

Phases

Unknown

Study type

Observational

Source

TCTR

Registry ID

TCTR20220901003

Enrollment

Registered

2022-09-01

Start date

2020-09-03

Completion date

Unknown

Last updated

2026-08-03

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

IBS patient Low FODMAP diet ROME III criteria Low FODMAP abdominal bloating Functional gastrointestinal disorder intestinal gas spot breath test

Interventions

Improvement of bloating symptoms, abdominal pain or overall GI symptoms more than 30% from baseline,Improvement of bloating symptoms, abdominal pain or overall GI symptoms lower than 30% from baseline

Diagnostic,Diagnostic

Low FODMAP responder,Low FODMAP non responder

Eligibility

Sex/Gender

All

Age

20 Years to 65 Years

Inclusion criteria

Inclusion criteria: Age 20 to 65 years old Diagnosed as IBS from ROME IV criteria Not diagnosed SIBO Informed consent

Exclusion criteria

Exclusion criteria: Diagnosed as SIBO no informed consent

Design outcomes

Primary

Measure	Time frame
Hydrogen level Basline PPM,Methane level Baseline PPM	—

Secondary

Measure	Time frame
Bloating severity baseline VAS,Abdominal pain severity baseline VAS,Overall GI symptoms baseline VAS	—

Countries

Thailand

Contacts

Public ContactPochara Somvanapanich

Faculty of medicine, Chulalongkorn university

pochara17@gmail.com0840800038

Outcome results

None listed

Source: TCTR (via WHO ICTRP) · Data processed: Aug 9, 2026