BVAS — Birmingham Vasculitis Activity Score

Calculate the Birmingham Vasculitis Activity Score (BVAS v3) across 9 organ systems to assess disease activity in ANCA-associated and other systemic vasculitides.

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Clinical Guidance

BMI is a screening measure of body size, not a direct measure of body fat. The standard WHO categories are underweight (<18.5), normal (18.5–24.9), overweight (25–29.9), and obese (≥30).

BMI can overestimate body fat in athletes with high muscle mass and underestimate it in older adults with low muscle mass. Interpret it alongside waist circumference and clinical context rather than as a standalone diagnosis.

⚕ Clinical Disclaimer: These calculators are for educational and reference purposes only. Always verify results with qualified clinical judgment and current clinical guidelines. Do not use as a sole basis for medical decisions.
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How It Works

Calculate the Birmingham Vasculitis Activity Score (BVAS v3) across 9 organ systems to assess disease activity in ANCA-associated and other systemic vasculitides

Each component has a specific meaning:

  • 9 organ systems — The 9 organ systems recorded for the scenario being assessed.

Note: Interpret the bvas score result against the thresholds and context described above.

How to Use

Enter the 9 organ systems for the scenario you are assessing. Calculate the Birmingham Vasculitis Activity Score (BVAS v3) across 9 organ systems to assess disease activity in ANCA-associated and other systemic vasculitides. Use the bvas score result to inform your calculation.

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