billycalc

HAS-BLED (ext.)

HAS-BLED (ext.): calculated with the published clinical method, with result interpretation. A reference tool that does not replace a doctor's advice.

ℹ Reference calculation based on the published method. It does not replace a clinical examination or a doctor's decision.

HAS-BLED (ext.)

Uncontrolled hypertension, SBP >160 (1 = yes)
Abnormal renal function (1 = yes)
Abnormal liver function (1 = yes)
Prior stroke (1 = yes)
Bleeding history or predisposition (1 = yes)
Labile INR (1 = yes)
Age >65 years (1 = yes)
Antiplatelet agents or NSAIDs (1 = yes)
Alcohol ≥8 drinks per week (1 = yes)
HAS-BLED total score
1
Kidney: dialysis, transplant or creatinine >200 µmol/L (>2.26 mg/dL)Liver: cirrhosis or bilirubin >2× ULN with AST/ALT/ALP >3× ULNLabile INR: time in therapeutic range <60%≥3 — address modifiable risk factors; this is not a contraindication to anticoagulationHAS-BLED (ext.): calculated with the published clinical method, with result interpretation. A reference tool that does not replace a doctor's advice.
Bleeding risk
Low
Bleeds per 100 patient-years
1.02

More about: HAS-BLED (ext.)

What it calculates

The “HAS-BLED (ext.)” calculator computes HAS-BLED total score from 9 parameters: uncontrolled hypertension, sbp >160 (1 = yes), abnormal renal function (1 = yes), abnormal liver function (1 = yes), prior stroke (1 = yes), bleeding history or predisposition (1 = yes), labile inr (1 = yes), age >65 years (1 = yes), antiplatelet drugs or nsaids (1 = yes), alcohol ≥8 drinks per week (1 = yes).

Used by professionals and patients to assess health metrics, dosages, and risks.

Example calculation

With parameters Uncontrolled hypertension, SBP >160 (1 = yes) = 0, Abnormal renal function (1 = yes) = 0, Abnormal liver function (1 = yes) = 0, Prior stroke (1 = yes) = 0, Bleeding history or predisposition (1 = yes) = 0, Labile INR (1 = yes) = 0, Age >65 years (1 = yes) = 1, Antiplatelet drugs or NSAIDs (1 = yes) = 0, Alcohol ≥8 drinks per week (1 = yes) = 0 the result is 1 (Kidney: dialysis, transplant or creatinine >200 µmol/L (>2.26 mg/dL)).

How to use

  1. Enter uncontrolled hypertension, sbp >160 (1 = yes), abnormal renal function (1 = yes), abnormal liver function (1 = yes), prior stroke (1 = yes), bleeding history or predisposition (1 = yes), labile inr (1 = yes), age >65 years (1 = yes), antiplatelet drugs or nsaids (1 = yes) and alcohol ≥8 drinks per week (1 = yes) — each field above is adjustable with a slider.
  2. HAS-BLED total score is calculated automatically as you type.
  3. Check the worked example below to see the formula applied to real numbers.
  4. Copy the result or bookmark this calculator.

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FAQ

How is BMI calculated?
BMI = weight (kg) / height (m)². Example: 70 kg / (1.75 m)² = 22.9. The WHO normal range is 18.5–24.9; below that is underweight, 25–29.9 is overweight, and 30+ is obese.
Is BMI accurate for everyone?
No. BMI does not distinguish muscle from fat, so athletes may show a high BMI with low body fat. It is also less reliable for teenagers, pregnant people, older adults, and very tall or short individuals.
What are the BMI categories?
Underweight: below 18.5. Normal: 18.5–24.9. Overweight: 25–29.9. Obese class I: 30–34.9; class II: 35–39.9; class III: 40+.
What is a better measure than BMI?
Body fat percentage, waist-to-height ratio (aim for under 0.5), and waist circumference give a clearer picture of health than BMI alone.

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