What HAS-BLED score indicates high bleeding risk?

HAS-BLED ≥3 indicates high bleeding risk (>3%/year major bleeding) and mandates addressing modifiable risk factors. It should not be used to withhold anticoagulation but to identify and correct risk factors.

Which HAS-BLED factors are modifiable?

Modifiable factors: uncontrolled hypertension (H), labile INR (I in anticoagulated patients), concomitant antiplatelet or NSAID use (D), and alcohol excess (A). Addressing these reduces bleeding risk.

HAS-BLED Score — Bleeding Risk in Anticoagulated AF

Calculate the HAS-BLED score (Hypertension, Abnormal renal/liver function, Stroke, Bleeding, Labile INR, Elderly, Drugs/alcohol) to estimate annual major bleeding risk in atrial fibrillation patients on anticoagulation.

Use the full interactive calculator below, or

HAS-BLED Score — Bleeding Risk in Anticoagulated AF

Frequently Asked Questions

What HAS-BLED score indicates high bleeding risk?

Which HAS-BLED factors are modifiable?