A therapeutic bleeding risk stratification score for those on oral anticoagulants in atrial fibrillation. It is matched to the CHA2DS2-VASC score used for stroke risk stratification but has not as of 2010 been externally validated.

HAS-BLED score for bleeding risk on oral anticoagulation in AF



 Score if present


 Hypertension (Systolic>=160mmHG)



 Abnormal renal & liver function (1 point each)

 1 or 2


 Stroke in past






 Labile INRs



 Age >=65 years



 Taking other drugs & alcohol (1 point each)

 1 or 2



 Maximum 9 points


A score of 3 or more indicates an increased one year bleed risk on anticoagulation sufficient to justify caution or more regular review.

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