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Can a blood test tell if you ate yogurt?

NCT ID NCT07491887

Knowledge-focused Sponsor: Laval University 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 This study
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 Results may not be published yet.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
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This status has not been confirmed recently, so it may be out of date.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 aims to find substances in the blood that can show whether someone has eaten yogurt. Researchers will give 16 healthy adults different amounts of yogurt or a soy-based pudding over four separate weeks. By analyzing blood samples, they hope to identify reliable biomarkers of yogurt intake, which could improve the accuracy of diet studies.

What this could mean

Our plain-language read of the trial. This is informational only, not medical advice or a prediction.

Active substance
yogurt
What this could lead to
If successful, this could provide a reliable blood test to measure yogurt intake, helping researchers study its health effects more accurately.
What could go wrong
This is a small, early-stage study with only 16 people. The biomarkers may not work in larger, more diverse groups or in real-world settings.

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

About 16 people

The number the study aims to enrol. It can still change while the study runs.

Expected to start

Mar 2026

An estimate. Start dates often move.

Expected to finish

Jun 2026

An estimate. End dates often move.

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 to 70 years

Sex

Anyone

Healthy volunteers

Accepted

You do not need to have the condition being studied to take part.

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: * age: 18-70 years; * BMI: 18-40 kg/m²; * willingness to consume plain yogurt daily for 3 weeks; * for coffee/tea consumers, willingness to consume these beverages without added milk, cream or sugar for 4 weeks. Exclusion criteria: * lactose intolerance; blood donation within 2 months; severe chronic illness or ongoing treatment for conditions such as infections, autoimmune diseases, cancer, type 2 diabetes, Crohn's disease, celiac disease, hepatic or renal diseases; * history of severe cancer, cardiovascular disease or bariatric surgery; * unstable body weight for 3 months; * illicit drug use or alcoholism; tobacco/cannabis smoking/vaping (ensuring no day-to-day fluctuations and objective reporting of consumption is too complex); * allergies or aversions to components of the diets.

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As listed by the trial registrant

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

DIET

How to take part

Only the study team decides who joins. These are the ways to reach them.

  1. The places running it

    1 site. The list below names each one and where it is.

  2. The official record

    ClinicalTrials.gov lists the study team's own contact details, including names and phone numbers. We don't republish those.

    Open the record ↗

  3. A doctor treating you

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Contacts and locations

Locations

  • Institute on nutrition and functional foods, Laval University

    Québec, Quebec, G1V0A?, Canada

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