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Breathalyzer-style device sniffs out fasting state in routine clinic study

NCT ID NCT02419976

Knowledge-focused Sponsor: Mayo Clinic Source: ClinicalTrials.gov ↗

What the study statuses mean

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Recruitment status, easiest to join first

Recruiting now
This trial is taking on new participants right now.
Not yet recruiting
Registered, but not yet taking participants.
By invitation only
Not open to general applications. Only people the study team invites can take part.
Paused
Paused for now. It may or may not start again.
Ongoing
Running, but no longer taking on new participants.
Completed
The trial has finished. Results may not be published yet.
Stopped early This study
Stopped early, before it reached the end. That can be for many reasons, including safety.
Cancelled
Cancelled before anyone took part.

Expanded access (not trials)

Expanded access
Not a trial. This treatment can be requested outside a study, case by case, for people who qualify.
Expanded access (paused)
Not a trial. The treatment can normally be requested outside a study, but is unavailable right now.
Expanded access (ended)
Not a trial. The treatment could once be requested outside a study, but no longer can.
Approved
The treatment has been approved, so it is available normally rather than through this programme.

When the status isn't known

Details not published
The full record has not been published yet, so there is little to show here.
Status unknown
This status has not been confirmed recently, so it may be out of date.

First seen Jun 27, 2026 · Last updated Jun 27, 2026

Summary

This study tested whether a handheld electronic device called the Aeonose could tell if a person had been fasting just by analyzing their breath. Researchers collected breath samples from 879 adults before and after routine endoscopy procedures. The goal was to see if the device could reliably distinguish fasting from non-fasting states using exhaled compounds, with no risk to participants.

This is an AI summary of the original study and may miss details. Read our disclaimer.

Study facts

What this study's own registry entry says, in plain language.

Phase

Not a phased trial

Phase numbers describe drug development. The registry uses this when they do not apply, as it does for trials of devices, procedures or behaviour changes, and for observational studies.

Participants

879 people

The number who actually took part.

Start date

Feb 2015

Finished

Jun 2024

Lead sponsor

Other sponsor

The registry's catch-all category, for sponsors it does not file as a company, a government agency, or a research network.

Who can take part

This study's own entry requirements. Only the study team can say for certain whether you qualify.

Ages

18 years and older

Sex

Anyone

Healthy volunteers

Not accepted

This study is not open to healthy volunteers. The entry requirements below say who it is open to.

Show the full entry requirements

Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.

Inclusion Criteria: * Inclusion Criteria: 1. Adult (18+) patient undergoing scheduled elective outpatient upper endoscopy 2. Willing and able to consent to research protocol 3. Fasting as required per routine instruction for upper endoscopy 4. Able to breath for approximately 10 minutes pre and post procedure into the Aeonose device with a nose-plug on 5. Able to consume standard refreshments post procedure during recovery per routine endoscopic area policy Exclusion Criteria: <!-- --> 1. Non-fasting per protocol, or known to have had food or drink outside of routine protocol 2. \< 18 years of age 3. Unable or unwilling to consent to research protocol 4. Inability to tolerate Aeonose breathing (such as those with claustrophobia, anxiety, nasal trauma, etc.) 5. Unable to consume refreshment post procedurally 6. Unable to repeat Aeonose measurement post-procedurally due to tolerance or medical indication (such as instructed to remain fasting)

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Conditions

The condition(s) this trial relates to.

Fasting

As listed by the trial registrant

The condition terms exactly as the trial's registrant entered them.

Fasting

Contacts and locations

Locations

  • Mayo Clinic Rochester

    Rochester, Minnesota, 55905, United States

More trials for these conditions

Other studies related to the condition(s) this trial covers.