– share this tool –

Clinical Use

Assess risk of bleeding from anticoagulation in patients with atrial fibrillation

More Info

The HAS-BLED score was derived from a cohort of 3978 in the Euro Heart Survey on AF. A bleeding risk score termed HAS-BLED is an acronym for Hypertension, Abnormal liver/renal function, Stroke history, Bleeding predisposition, Labile INR, Elderly, Drug/alcohol usage.


HAS-BLED Scoring
Risk FactorPoints
Renal disease (dialysis, transplant, Cr >2.26 mg/dL or 200 µmol/L)+1
Liver disease (cirrhosis or bilirubin >2x normal with AST/ALT/AP >3x normal)+1
Stroke history+1
Prior major bleeding or predisposition to bleeding+1
Labile INR (unstable/high INRs, time in therapeutic range < 60%)+1
Elderly (age >65)+1
Medication usage predisposing to bleeding (aspirin, clopidogrel, NSAIDs)+1
Alcohol usage (≥ 8 drinks/week)+1


Risk of bleeding according to HAS-BLED Score
ScoreRiskRate of major bleeding at 90 days














1.Pisters R, Lane DA, Nieuwlaat R, de Vos CB, Crijns HJ, Lip GY. A novel user-friendly score (HAS-BLED) to assess one-year risk of major bleeding in atrial fibrillation patients: The Euro Heart Survey. Chest. 2010 Mar 18. Abstract
2.Lip GY, Frison L, Halperin JL, Lane DA. Comparative validation of a novel risk score for predicting bleeding risk in anticoagulated patients with atrial fibrillation: the HAS-BLED (Hypertension, Abnormal Renal/Liver Function, Stroke, Bleeding History or Predisposition, Labile INR, Elderly, Drugs/Alcohol Concomitantly) score. J Am Coll Cardiol. 2011 Jan 11;57(2):173-80. Abstract


We are doing our best to prepare the content of this website. However, Cardiology Connections, Corp cannot warranty the expressions and suggestions of the contents, as well as its accuracy. In addition, to the extent permitted by the law, Cardiology Connections, Corp shall not be responsible for any losses and/or damages due to the usage of the information on our website. Furthermore, the links contained on our website may lead to external sites, which are provided for convenience only. Any information or statements that appeared in these sites are not sponsored, endorsed, or otherwise approved by Cardiology Connections, Corp. For these external sites, Cardiology Connections, Corp cannot be held liable for the availability of, or the content located on or through it. Plus, any losses or damages occurred from using these contents or the internet generally.

Developer: Sirikarn Napan, MD, FACC