BARD Score Calculator
BARD Score Calculator
A three-item score that rules out advanced fibrosis in fatty liver disease from BMI, the AST/ALT ratio and diabetes status.
BARD Score
3 items → 0–4BMI 31, AST 40, ALT 45 (ratio 0.89), no diabetes
Scoring
- B
- BMI ≥ 28 kg/m²
- A
- AST/ALT ratio ≥ 0.8 — the heaviest weighted item
- R
- diabetes ratio, the third component
- D
- the score's own acronym: BMI, AST/ALT Ratio, Diabetes
Worked example
BMI 31, AST 40, ALT 45 (ratio 0.89), no diabetes
BMI ≥ 28 → 1 point
AST/ALT 0.89 ≥ 0.8 → 2 points
No diabetes → 0
Total 3 points → raised risk
Interpretation
| Score | Advanced fibrosis | Predictive value |
|---|---|---|
| 0 – 1 | Unlikely | NPV ≈ 96% |
| 2 – 4 | Possible | PPV ≈ 43% |
A rule-out test, and only that
BARD is the simplest of the fatty liver fibrosis scores. Three yes-or-no items, no laboratory values beyond a routine liver panel, and no arithmetic beyond addition — it can be answered from memory at the bedside.
Its performance is markedly asymmetric, and understanding that is the whole point of using it. A score of 0 or 1 makes advanced fibrosis unlikely, with a negative predictive value around 96% in the derivation cohort. A score of 2 or more is far less informative: the positive predictive value is roughly 43%, so most patients scoring high do not in fact have advanced fibrosis.
Used correctly it is a first filter — it removes the low-risk group cheaply, and everyone else goes on to a better test. Used incorrectly, as a rule-in test, it generates unnecessary referrals. FIB-4 and the NAFLD fibrosis score both outperform it and should be preferred where the inputs are available, which in practice they usually are.
One structural weakness is worth noting: two of the three items are metabolic rather than hepatic, so almost every obese diabetic patient scores at least 2 regardless of their liver, which limits its discriminating power in exactly the population it is applied to.
Frequently asked questions
What is a good BARD score?
0 or 1. That makes advanced fibrosis unlikely, with a negative predictive value of about 96%. A score of 2 to 4 warrants a better test rather than a referral on its own.
Why is the AST/ALT item worth 2 points?
It carried the greatest weight in the derivation model. A reversed ratio reflects progression from simple steatosis toward fibrosis, and it discriminated better than either metabolic item.
Is BARD better than FIB-4?
No. FIB-4 and the NAFLD fibrosis score both perform better. BARD’s advantage is that it requires no calculation and no platelet count.
Why does almost every diabetic patient score 2 or more?
Two of the three items are metabolic rather than hepatic, so an obese patient with diabetes scores 2 before the liver is considered at all. This is the score’s main limitation in its target population.
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References
- Harrison SA et al. Development and validation of a simple NAFLD clinical scoring system for identifying patients without advanced disease. Gut. 2008;57(10):1441–7.
- EASL-EASD-EASO Clinical Practice Guidelines on the management of MASLD.