HAS-BLED Score Calculator
Calculate bleeding risk in patients on anticoagulation therapy to guide clinical decisions according to UK guidelines.
Important Disclaimer: This calculator is for informational purposes only and should be used under the guidance of a healthcare professional. Risk assessment should be conducted by qualified healthcare providers as part of a comprehensive clinical evaluation.
HAS-BLED Score
Clinical Recommendation
About This Score
HAS-BLED Score
The HAS-BLED score estimates the risk of major bleeding for patients on anticoagulation. It helps identify and address modifiable risk factors to reduce bleeding risk.
Components:
- H: Hypertension (SBP > 160 mmHg) (1 point)
- A: Abnormal renal/liver function (1 point each, max 2 points)
- S: Stroke history (1 point)
- B: Bleeding history or predisposition (1 point)
- L: Labile INR (1 point)
- E: Elderly (Age > 65 years) (1 point)
- D: Drugs/alcohol (1 point each, max 2 points)
Note: This calculator is intended for healthcare professionals. Clinical judgment should always be used alongside risk scores. A high HAS-BLED score (≥3) indicates increased risk of bleeding and the need to address modifiable risk factors, but is not in itself a contraindication to anticoagulation.