Clinical trial Recruiting at 1 site Observational Ages 30 and up

Investigating Alzheimer's biomarkers in tears and blood

Official title: Examination of Alzheimer's Disease Biomarkers in Tears and Dry Blood Spots

Run by Danish Dementia Research Centre · NCT06567431 · Data updated 2026-11-12

This study is testing if we can find signs of Alzheimer's disease in tears and blood samples from people already diagnosed with Alzheimer's and other types of dementia.

More Neurodegenerative Diseases trials

Quick facts

Study typeObservational
Ages30 Years and up
SexAll
Enrollment600 (estimated)
SponsorDanish Dementia Research Centre
Research network
Locations1 site (Copenhagen)
StatusRecruiting
StartedMarch 18, 2024
Main results expectedJanuary 31, 2026
Study endsDecember 31, 2028
Registry record updatedAugust 22, 2024
Trial IDNCT06567431 on ClinicalTrials.gov

Is this trial a fit for you?

Likely a good fit

Ideal candidates include individuals diagnosed with Alzheimer's disease, Dementia with Lewy Bodies, Frontotemporal dementia, vascular dementia, or Normal pressure hydrocephalus who are undergoing a lumbar puncture.

Probably not a fit

Patients who do not require a lumbar puncture or those deemed clinically unfit for participation will not benefit from this study.

A plain-English reading of the study's rules. Only the study team can confirm whether you qualify.

What this trial studies

This observational study aims to explore the presence of Alzheimer's disease biomarkers in tear fluid and dried blood spots from patients diagnosed with Alzheimer's and other forms of dementia. Participants scheduled for a lumbar puncture at the Memory Clinic will provide tear fluid and blood samples on the same day. Additionally, a sub-study will involve participants repeating the dried blood spot collection at home one week later. The collected samples will be analyzed for Alzheimer's-related pathology alongside cerebrospinal fluid.

Why it matters

Potential benefit: If successful, this study could lead to non-invasive methods for diagnosing and monitoring Alzheimer's disease.

How similar studies have gone: While the approach of using tear fluid for biomarker analysis is innovative, similar studies have shown promise in other contexts, indicating potential for success.

Who can join: the full rules

Show full inclusion / exclusion criteria
Inclusion Criteria:

Inclusion criteria for patients:

* Lumbar puncture with CSF avaiable for analysis
* Diagnosis of Alzheimer's disease, Dementia with Lewy Bodies (DLB), Frontotemporal dementia (FTD), vascular dementia (VaD) or Normal pressure hydrocephalus (NPH)
* Of legal age.

Inclusion criteria for controls:

* Lumbar puncture with CSF avaiable for analysis
* No neurological disease.
* Of legal age.

Exclusion Criteria:

* No lumbar puncture
* Clinically assessed as unfit to participate in the project.

Where it's running

  • Danish Dementia Research Centre
    Copenhagen, Denmark
    Recruiting

Study contacts

Similar studies

Other studies for the same condition or treatment. Recruiting studies are listed first.

How to take part

  1. Review the eligibility criteria above with your treating physician.
  2. Check the official listing on ClinicalTrials.gov for the latest contact details and recruitment status.
  3. Contact the study coordinator or principal investigator to ask for pre-screening. Pre-screening is free and never obligates you to enroll.
Last reviewed 2026-11-14 by the Find a Trial editorial team. Information on this page is for educational purposes and is not medical advice. Always consult qualified healthcare professionals about clinical trial participation.