HAS-BLED Bleeding Risk

Estimates 1-year major bleeding risk on anticoagulation — used alongside CHA₂DS₂-VASc.

Designed for healthcare professionals or trained caregivers — not for self-diagnosis. If you have symptoms, seek medical care.
Awaiting clinical review. Results are based on validated formulas but pending physician verification.

How this is calculated

One point each for hypertension, abnormal renal and/or liver function, stroke, bleeding history, labile INR, elderly (>65), and drugs and/or alcohol — summed 0–9.

Sources

  1. Pisters R, Lane DA, Nieuwlaat R, de Vos CB, Crijns HJ, Lip GY. A novel user-friendly score (HAS-BLED) to assess 1-year risk of major bleeding in AF. Chest 2010.
This calculator is for educational purposes and is not a substitute for professional medical advice, diagnosis, or treatment. The result is based on standard clinical formulas applied to the values you entered — your individual situation may need adjustments your doctor can make. Never disregard professional medical advice or delay seeking it because of something you read or calculated on healthcalculus.