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Related Concept Videos

Blood Studies for Cardiovascular System I: Cardiac Biomarkers01:20

Blood Studies for Cardiovascular System I: Cardiac Biomarkers

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Cardiac biomarkers are enzymes, proteins, and hormones released into the blood when cardiac cells are injured. They are powerful tools for triaging.
The essential diagnostic tools for detecting myocardial necrosis and monitoring individuals suspected of having acute coronary syndrome (ACS) include:
Troponins
Troponins, particularly cardiac troponins I and T, are the most precise and sensitive markers of myocardial injury. They are detectable within 4-6 hours of myocardial injury and remain...
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Blood Studies for Cardiovascular System II: CRP, Hcy, and Cardiac Natriuretic Peptide Markers01:19

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Cardiac biomarkers are critical in diagnosing, prognosing, and managing cardiovascular diseases. Routine measurement of specific biomarkers such as B-type natriuretic peptide (BNP), C-reactive protein (CRP), and homocysteine (Hcy) is common practice in clinical settings to evaluate heart function and predict cardiovascular events.
These markers indicate stress or strain on the heart muscle:
Natriuretic Peptides (BNP)
Cardiac myocytes produce these hormones in response to ventricular stretching...
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Updated: Jan 7, 2026

Dried Blood Spot Collection of Health Biomarkers to Maximize Participation in Population Studies
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Biomarkers.

Sinthujah Vigneswaran1,2,3, Inge M W Verberk4, Lynn Boonkamp5

  • 1Alzheimer Center, Department of Neurology, Amsterdam UMC, Vrije Universiteit Amsterdam, Amsterdam Neuroscience, Amsterdam, Netherlands.

Alzheimer'S & Dementia : the Journal of the Alzheimer'S Association
|December 26, 2025
PubMed
Summary
This summary is machine-generated.

Blood-based biomarkers (BBM) improve diagnostic confidence for neurodegenerative diseases. This panel showed added value in memory clinics, aiding diagnosis in a small number of patients.

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Area of Science:

  • Neurology
  • Biomarker Research
  • Clinical Diagnostics

Background:

  • Blood-based biomarkers (BBM) offer a minimally invasive approach for diagnosing neurodegenerative diseases.
  • Assessing the real-world clinical validity of BBM panels in memory clinic patients is crucial before widespread adoption.

Purpose of the Study:

  • To prospectively evaluate the impact of a tailored BBM panel on syndrome diagnosis, suspected etiology, and diagnostic confidence.
  • To determine the clinical utility of BBM results in a real-world memory clinic setting.

Main Methods:

  • 450 patients underwent a standardized diagnostic workup, including a BBM panel (plasma pTau181, GFAP, NfL).
  • BBM results were tailored to differential diagnoses and disclosed after initial clinical evaluation.
  • Syndrome diagnosis, suspected etiology, and diagnostic confidence were assessed before and after BBM disclosure.

Main Results:

  • Median diagnostic confidence increased significantly from 80% to 90% (p < 0.001) after BBM disclosure.
  • Syndrome diagnoses were revised in 1% of patients, and suspected etiologies were altered in 5%.
  • Among patients with suspected Alzheimer's disease (AD), 36% were classified as high probability for AD based on the BBM panel.

Conclusions:

  • A BBM panel tailored to individual diagnostic considerations increases diagnostic confidence.
  • The BBM panel demonstrated added value in daily clinical practice, influencing diagnoses in a minority of patients.