• A G Shaw, J Simpson, G Tierney, A F Goddard, J R Reynolds, and J N Lund.
• Department of Colorectal Surgery, Derby City General Hospital, Derby, UK. drshaw@doctors.net.uk
• Colorectal Dis. 2008 Mar 1;10(3):294-7.

ObjectiveOne of the 2-week wait (2WW) criteria for suspected lower gastrointestinal cancer states that patients should be referred who have iron deficiency anaemia (IDA) without obvious cause [Haemoglobin (Hb) <11 g/dl men, <10 g/dl postmenopausal women].AimOur aim was to find the proportion of patients referred as a 2WW not meeting the criteria, and the cost accrued by unnecessary referral.MethodPatients referred over 1 year were identified using the hospitals cancer database. Haematology, haematinics, coeliac serology and cancer status were recorded for each patient.ResultsA total of 204 patients were referred. In total, only 22/204 patients (10.8%) met all the necessary criteria for diagnosis and investigation of IDA prior to referral. As only 43/204 (21.1%) had been assessed for coeliac serology, this accounted for the majority of incomplete referrals. Excluding coeliac serology, only 127 (62.3%) met 2WW criteria for IDA. Of the remaining 77 patients, 57 (74%) patients did not meet the 2WW criteria on Hb alone and 35/77 were referred with no evidence of IDA. 12/127 (9.4%) patients were diagnosed with colorectal cancer. No cancers were detected in patients without BSG evidence of IDA, although one patient did not meet the criteria on Hb level alone.ConclusionAlthough iron deficiency is a good marker for gastrointestinal cancer, it is evident that 2WW referral guidelines are not being followed. 89.2% of referrals are inappropriate according to guidelines. This not only has considerable workload and financial implications but could be potentially detrimental to patient health.

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