ABC Score — Massive Transfusion (Trauma) is a trauma / transfusion tool commonly applied in Emergency Medicine. Penetrating mechanism, hypotension, tachycardia, positive FAST — each +1; ≥2 suggests MTP activation context. Use the interactive calculator for inputs, limitations, and primary references.

Not a substitute for clinical judgment. Verify critical values with primary literature, local protocols, and specialist input when appropriate.