This study aims to improve clinical decision making in the emergency department for patients presenting with LGIB.

The HAKA score predicts severe LGIB with a NPV of 88% and PPV of 44%.

HAKA – Haemoglobin less than 100 mg/dl; Use of Aspirin; history of (K) collapse; and Albumin less than 38 g/l.

This clinical prediction tool could be used to identify those high risk patients requiring admission while low risk patients could be safely and effectively treated as outpatients.