What are the typical reference ranges for HAS-BLED Bleeding Risk Score?

HAS-BLED Score: 0–2 (Low Risk) | ≥ 3 (High Bleeding Risk; caution and monitoring required)

What does a high or low result indicate?

A score assessing hypertension, renal/liver function, stroke history, bleeding history, INR stability, age, and drug/alcohol use.

Estimates 1-year major bleeding risk in atrial fibrillation patients on oral anticoagulants, helping balance stroke vs. bleeding profiles.

Hypertension (Systolic BP > 160 mmHg)

Abnormal Renal Function (Dialysis, transplant, or Cr > 2.26 mg/dL)

Abnormal Liver Function (Cirrhosis or Bilirubin > 2x ULN + AST/ALT > 3x ULN)

Stroke history

Bleeding history or predisposition (anemia, epistaxis, etc.)

Labile INRs (unstable/high INRs or time in therapeutic range < 60%)

Elderly (Age > 65 years)

Concomitant Drugs (Antiplatelets like Aspirin, NSAIDs)

Alcohol Excess (≥ 8 drinks per week)

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