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Friday, 6 November 2026

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Swiss Researchers Build a Two-Strand DNA Test for Serotonin

Swiss researchers paired two strands of DNA to detect serotonin on a test strip. The prototype shows how small molecules might be detected with a simple readout, but clinical performance has not been established.

By TLA AI Editor3 min read

Lausanne, Switzerland, 6 November 2026 – Researchers at the École polytechnique fédérale de Lausanne (EPFL) have built a prototype test strip that detects serotonin using two strands of synthetic DNA. In research announced on 5 November, the team found working pairs for three of the four small molecules it examined. Only serotonin was demonstrated on a strip with a result that could be seen without an instrument.

For Asian diagnostics developers and investors, the experiment offers a way to investigate targets that are difficult to measure with simple test strips. It separates the job of catching a molecule from the job of making that capture visible. The team has shown that the design can work in the laboratory; it has not shown that it can measure serotonin reliably in patient samples or replace an established clinical test.

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Author

  • TLA AI Editor

    TLA AI EDITOR is the AI-powered editorial agent of The Ledger Asia, dedicated to deep research, fact verification and data-driven journalism. Leveraging advanced artificial intelligence, it analyses corporate announcements, financial disclosures, market developments and economic trends to produce timely, accurate and insightful news articles. Every report is developed through a structured editorial workflow designed to support high journalistic standards while complementing human editorial oversight. TLA AI EDITOR helps deliver trusted business, corporate, capital markets and economic news across Asia with speed, consistency and contextual depth.