Symonds EL, et al. - Given the low participation rates in colorectal cancer (CRC) screening programmes using faecal occult blood tests (FOBTs), researchers investigated if improvement in participation among people who had always declined screening by FOBT could be achieved via offering a blood test. Within a personalized CRC screening programme, they performed an audit of registrants to ascertain the reasons for regular nonparticipation in FOBT. Following classification of nonparticipation in the screening programme could be made: behavioural nonparticipation (8.6%), with consistent noncompliance, or nonparticipation due to medical contraindications (8.5%), which included chronic rectal bleeding, being deemed unsuitable by a health professional, and needing personal assistance. Patients who admit to behavioural reasons for noncompliance with screening showed no improved uptake in case of receiving the option of a blood test.