Colonoscopy guidelines here:
https://www.hiqa.ie/sites/default/files/2017-01/HIQA-Lower-GI-for-consultation.pdf
The referral theresholds are on page 24
Upper GI endcoscopy here:
https://www.hiqa.ie/sites/default/files/2017-01/Upper-GI-Symptoms-Post-Comms.pdf
Referral thresholds on page 26
