HAS-BLED Bleeding Risk Score


Hypertension (1 point)

Abnormal liver function (1 point)

Abnormal renal function (1 point)

Stroke (1 point)

Bleeding tendency or predisposition (1 point)

Labile INRs in patients taking warfarin (1 point)

Elderly: age greater than 65 years (1 point)

Drugs: concomitant antiplatelet agent(s) or NSAIDS (1 point)

Drugs: alcohol abuse (1 point)

Total Criteria Point Count:


HAS-BLED Score Interpretation

0 points: 1.13 bleeds per 100 patient-years
1 point: 1.02 bleeds per 100 patient-years
2 points: 1.88 bleeds per 100 patient-years
3 points: 3.74 bleeds per 100 patient-years
4 points: 8.70 bleeds per 100 patient-years
5 to 9 points: Insufficient data (high risk)


  1. Lip GY. Implications of the CHA(2)DS(2)-VASc and HAS-BLED Scores for thromboprophylaxis in atrial fibrillation. Am J Med. 2011 Feb;124(2):111-4. PubMed ID: 20887966 PubMed Logo


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