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Filter substrate enables breakthrough STI test

By Haydn Davis
15 April 2026

Ahlstrom’s 226 filter paper has been validated as the substrate for a dried urine strip method for chlamydia and gonorrhoea testing developed by the Public Health Agency of Canada

Ahlstrom filter papers

STOCKHOLM - Ahlstrom’s 226 filter paper has been confirmed as a key component in a newly published dried urine strip method for chlamydia and gonorrhoea diagnostics led by the Public Health Agency of Canada (PHAC).

The work, reported in the Journal of Clinical Microbiology, describes a dried urine strip (DUS) format that allows end users to collect urine samples themselves while maintaining the analytical performance of laboratory-based molecular tests.

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