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New Stool Test Detects Colorectal Cancer with 90% Accuracy

4/11/2026

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Summary

Story summary

Researchers at the University of Geneva developed a non-invasive stool test for colorectal cancer using a detailed catalogue of gut bacteria, achieving about 90% detection versus 94% for colonoscopies.
The study, published in Cell Host & Microbe, highlights the need for better screening tools as colorectal cancer rises among younger adults.
A clinical trial is planned to assess the method's effectiveness in detecting different cancer stages.

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Story summary

Researchers at the University of Geneva developed a non-invasive stool test for colorectal cancer using a detailed catalogue of gut bacteria, achieving about 90% detection versus 94% for colonoscopies.
The study, published in Cell Host & Microbe, highlights the need for better screening tools as colorectal cancer rises among younger adults.
A clinical trial is planned to assess the method's effectiveness in detecting different cancer stages.