HAS-BLED Score
Estimates 1-year major bleeding risk on anticoagulation.
RESULT
HAS-BLED Score
What is HAS-BLED Score?
Estimates 1-year major bleeding risk on anticoagulation. HAS-BLED Score is intended for use in: Adults.
How to Use the HAS-BLED Score Calculator
- Enter Uncontrolled hypertension (SBP > 160).
- Enter Abnormal renal function (dialysis, transplant, Cr > 2.26 mg/dL).
- Enter Abnormal liver function (cirrhosis, bilirubin/enzymes > 3x normal).
- Enter Prior stroke.
- Enter Prior major bleeding or bleeding predisposition.
- Enter Labile INR (unstable/high, time in therapeutic range < 60%).
- Enter Age in years.
- Enter Concomitant antiplatelet/NSAID use.
- Enter Alcohol excess (≥ 8 drinks/week).
- Click Calculate to see your result and interpretation.
Formula & Version
This calculator uses formula version 1.0, last reviewed September 2026.
Clinical Considerations & Limitations
- A high score flags a patient for closer monitoring/risk-factor correction — it is not, by itself, a reason to withhold anticoagulation when otherwise indicated.
References
- Pisters R et al., Chest 2010;138:1093-1100
Frequently Asked Questions
What is HAS-BLED Score?
Estimates 1-year major bleeding risk on anticoagulation.
Who is HAS-BLED Score intended for?
Adults. Always confirm applicability to your specific patient before use.
What are the limitations of HAS-BLED Score?
A high score flags a patient for closer monitoring/risk-factor correction — it is not, by itself, a reason to withhold anticoagulation when otherwise indicated.
What formula or reference does HAS-BLED Score use?
Pisters R et al., Chest 2010;138:1093-1100
Is HAS-BLED Score a diagnosis?
No. HAS-BLED Score produces a score or estimate to support clinical decision-making — it is not a diagnosis and should be interpreted alongside full clinical judgement.
Medical Disclaimer: Medical calculators are provided for informational and educational purposes only. Results should not be used as a substitute for professional medical advice, diagnosis, or treatment. Always verify results with a qualified healthcare professional.
