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New study could make paracetamol allergy testing quicker and safer

NCT ID NCT03771118

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

What the study statuses mean

This study's is highlighted.

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 This study
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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 looked at nearly 500 patients who had a paracetamol (acetaminophen) allergy test over 22 years. The goal was to find the smallest dose that triggers a reaction, so future tests can be shorter and safer. By analyzing past data, researchers hope to create a simplified test that still accurately diagnoses paracetamol allergies.

What this could mean

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

What this could lead to
If successful, this could lead to a faster, more accurate allergy test for paracetamol, reducing unnecessary avoidance of a common painkiller.
What could go wrong
This is a retrospective analysis of old data, not a new treatment trial. The proposed test still needs to be validated in future prospective studies.

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.

Participants

498 people

The number who actually took part.

Started

Dec 2018

Finished

Dec 2019

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.

Who is studied

Patient consulting in our allergy unit for a suspicion of drug hypersensitivity to Paracetamol and who underwent DPT.

Ages

Children (under 18), adults (18 to 64) and older adults (65 and over)

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: \- Patients with a positive or negative DPT to paracetamol Exclusion criteria: * Patients refusing to take part in the study * Patient under 10 years old

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Conditions

The condition(s) this trial relates to.

drug allergy

As listed by the trial registrant

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

Drug hypersensitivity

Contacts and locations

Locations

  • University hospital of Montpellier

    Montpellier, Montpellier, 34295, France

More trials for these conditions

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