Cardiovascular

HAS-BLED Score Calculator

Major bleeding risk for patients on anticoagulation

Clinical use

Use this calculator for major bleeding risk for patients on anticoagulation in thecardiovascular workflow. It is decision support and should be interpreted with the patient context, local protocols, and clinician judgment.

Interpretation

Score ≥3 = high bleeding risk. Does NOT contraindicate anticoagulation — prompts modifiable risk factor optimisation (BP control, avoid unnecessary NSAIDs, stabilise INR).

Required inputs

Hypertension
Renal Disease
Liver Disease
Stroke History
Prior Bleeding
Labile INR
Age 65 +
Antiplatelet Or Nsaid
Alcohol Use

Evidence and limitations

This page cites 1 published reference. Confirm units and inclusion criteria before applying the output; calculators do not replace assessment, escalation, or local policy.

References

Pisters R et al. Chest 2010;138:1093-1100

Frequently asked questions

What is the HAS-BLED Score?

HAS-BLED Score is a clinical calculator used for Major bleeding risk for patients on anticoagulation.

How do I interpret the HAS-BLED Score?

Score ≥3 = high bleeding risk. Does NOT contraindicate anticoagulation — prompts modifiable risk factor optimisation (BP control, avoid unnecessary NSAIDs, stabilise INR).

What inputs are required for the HAS-BLED Score?

Required inputs include Hypertension, Renal Disease, Liver Disease, Stroke History, Prior Bleeding, Labile INR, Age 65 +, Antiplatelet Or Nsaid, Alcohol Use.