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Blood test could end guesswork in amoxicillin allergy diagnosis

NCT ID NCT06409884

Diagnosis Sponsor: University Hospital, Antwerp Source: ClinicalTrials.gov ↗

What the study statuses mean

This study's is highlighted.

Recruitment status, easiest to join first

Recruiting now This study
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 Results may not be published yet.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
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This status has not been confirmed recently, so it may be out of date.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 is testing a new blood test called the T-cell activation test to see if it can more accurately diagnose amoxicillin allergy. Researchers will compare results from 300 people with suspected allergy and those without. If the test works well, it could replace less reliable skin tests and help people avoid unnecessary antibiotic avoidance.

What this could mean

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

Active substance
T-cell activation test (blood test)
What this could lead to
If successful, this test could provide a more reliable way to diagnose amoxicillin allergy, helping patients avoid unnecessary restrictions on antibiotic use.
What could go wrong
This is an early validation study, so the test may not prove accurate enough for routine use. It also requires specialized lab work, which may limit availability.

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 300 people

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

Started

May 2024

Expected to finish

Sep 2027

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

6 years and older

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: Participants are eligible if they: * Are ≥ 6 years * Are capable of informed consent, or if appropriate, participants have an acceptable individual capable of giving consent on the participant's behalf (e.g. parent or guardian of a child under 18 years of age) * Have a suspected history of amoxicillin allergy Exclusion Criteria: * Patients who are lacking capacity or do not have an acceptable individual capable to provide informed consent * Pregnant women * Breastfeeding women

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Conditions

The condition(s) this trial relates to.

allergic disease drug allergy

As listed by the trial registrant

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

Amoxicillin allergy

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

    A doctor who knows your case can contact a study site on your behalf, and can tell you whether this study is worth pursuing at all.

Contacts and locations

Locations

  • Antwerp University Hospital

    RECRUITING

    Edegem, Antwerp, 2650, Belgium