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    Quantitative faecal immunochemical testing to guide colorectal cancer pathway referral in primary care

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    4 Recommendations for further research

    4.1 Further research is recommended to assess the effectiveness (including diagnostic accuracy, failure rate and test uptake) of:

    • FOB Gold

    • IDK TurbiFIT

    • IDK hemoglobin ELISA

    • IDK hemoglobin/haptoglobin complex ELISA

    • NS‑Prime

    • QuikRead go iFOBT.

    4.2 Further research is recommended on how using thresholds higher than 10 micrograms of haemoglobin per gram of faeces would affect decision making and clinical outcomes.

    4.3 Social research is recommended to evaluate methods to improve uptake and return of faecal immunochemical testing, especially in groups in which engagement is less likely such as:

    • males

    • people from ethnic minorities

    • people with lower socioeconomic status

    • people with cognitive disabilities or mental health conditions.