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Iron-deficiency anaemia (IDA) is often inappropriately investigated. This study aimed to improve referrals, estimate cost implications and determine effectiveness of referral criteria for diagnosing cancer. Patients referred for investigation of anaemia were studied. IDA was defined as haemoglobin &lt; 12.5 g/dl (M) and &lt; 11.5 g/dl (F), with ferritin &lt;15 ng/l (if normal erythrocyte sedimentation rate) or mean corpuscular volume &lt;76 fl. After referral form redesign/trust education, data were recollected. Sixty-six of 118 referred patients had non-IDA with annual cost of inappropriate referrals pounds 176,840. The haematology database identified 37 patients (30 F) with uninvestigated IDA (lost revenue pounds 120,254). After changes, 43/103 referred patients had non-IDA (p &lt; 0.05), with an annual saving of pounds 72,600. Fourteen of 112 patients with IDA had cancer versus 4/109 non-IDA (p &lt; 0.025), overall prevalence 8.1%. Many referrals for anaemia investigation are inappropriate and a 35% reduction was achieved. The sensitivity and negative predictive value of the referral criteria for diagnosing gastrointestinal cancer were 77.8% and 96.3% respectively.

Anaemia investigation in practice: inappropriate, cost inefficient with a risk of missing gastrointestinal cancer. Can we improve?