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Anticoagulation safety

HAS-BLED bleeding risk

Identifies bleeding risk and modifiable factors when starting or continuing anticoagulation in AF. A high score calls for review and monitoring, not withholding treatment.

HAS-BLED0–9 points≥3 high risknot a stop rule
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Patient details

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HAS-BLED risk factors

Renal and liver dysfunction, and medicines and alcohol, score separately.

Primary guidance

Clinical content last reviewed: 29 July 2026

Singapore ACE · oral anticoagulation for AFOriginal HAS-BLED study