The paper is a feasibility proof for a colorectal cancer preventive screening with a device based on chemoresistive sensors.

Laboratory tests have been performed with different combinations of sensing materials, chosing the best combination of five sensors.

Tests have been performed on fecal samples of healthy subjects and of patients affected by colorectal cancer, showing noticeable differences.

A quadratic discriminant analysis (QDA) has been performed, with a classification error of about 5%.