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New study aims to speed up stroke diagnosis with a simple spit or blood test

NCT ID NCT05300997

Diagnosis Sponsor: The University of Hong Kong 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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 looking for markers in blood and saliva that can quickly tell if a person is having a stroke, and what kind. Researchers will collect samples from 650 adults with suspected stroke within 24 hours of symptoms. The goal is to develop a fast, accurate test to help emergency doctors make better treatment decisions.

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 simple blood or saliva test that helps doctors quickly diagnose stroke type in the emergency room.
What could go wrong
This is an early observational study, not a treatment trial. The biomarkers may not prove accurate enough for real-world use, and results may not apply to all patients.

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

About 650 people

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

Started

May 2022

Expected to finish

Aug 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.

Who is studied

Suspected stroke patients presenting to emergency department within 24 hours of symptom onset.

Ages

18 to 100 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: * Patients eligible for enrolment include: * Adults ≥18 years of age. * Suspected acute stroke. Defined as either FAST-positive, or LAPSS-positive or ROSIER\>0 * Within 24 hours of symptom onset. * Informed consent. * Control subjects will be drawn from two groups: * Non-neurologic patients who are matched with TIA and stroke cases (AIS, HS) for age, race, gender and smoking plus one or more of the following vascular risk factors: diabetes, hypertension, atrial fibrillation, hyperlipidaemia. * Relatives or accompanying friends. * Note that we will include and collect samples from the following cases if they present as suspected stroke and are recruited \<24 hours from symptom onset. * Any central nervous system infection, i.e. meningitis or encephalitis in the past 30 days * Any form of head trauma, stroke or intracranial haemorrhage in the past 30 days * Known primary or metastatic cancer involving the brain * Active cancer is defined as a diagnosis of cancer, within 6 months before enrollment, any treatment for cancer within the previous 6 months, or recurrent or metastatic cancer. * Autoimmune diseases: such as lupus, rheumatoid arthritis, Crohn's disease, ulcerative colitis * Active infectious diseases (e.g. HIV/AIDS, hepatitis C) * Major surgery within three months prior to the index event Exclusion Criteria: * Clear onset of acute symptoms \>24 hours.

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Conditions

The condition(s) this trial relates to.

anterior cerebral artery infarction atherosclerosis atrial fibrillation basilar artery occlusion Embolic Stroke Embolism hemorrhagic stroke intracranial embolism ischemic stroke middle cerebral artery infarction stroke disorder thrombotic disease transient ischemic attack

As listed by the trial registrant

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

Acute ischemic stroke Atrial fibrillation Cardioembolic stroke Haemorrhagic stroke Large-artery atherosclerosis (embolus/thrombosis) Small vessel disease Stroke of anterior cerebral artery Stroke of basilar artery Stroke of middle cerebral artery Stroke of other determined etiology Stroke of undetermined etiology Transient ischemic attacks

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

  • Hong Kong University

    RECRUITING

    Hong Kong, China

More trials for these conditions

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