HAS-BLED Score

Uncontrolled Hypertension (SBP > 160)

Abnormal Renal Function

Abnormal Liver Function

Stroke History

Bleeding History/Predisposition

Labile INR (TTR < 60%)

Age > 65

Antiplatelets/NSAIDs

Excess Alcohol Use

HAS-BLED Score: 0 — Major bleeds per 100 patient-years: 1.13

Low Risk

Moderate Risk

High Risk

Low Risk

A score of 0-1 is associated with a low annual rate of major bleeding.

How this is calculated

One point per bleeding risk factor (hypertension, renal/liver disease, stroke history, bleeding history, labile INR, age >65, drugs, alcohol). Scores ≥3 indicate high annual major-bleeding risk per the original 2010 validation cohort.