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Glasgow-Imrie Score Calculator (Modified Glasgow Criteria for Pancreatitis)

Score acute pancreatitis severity with the modified Glasgow-Imrie criteria (PANCREAS): PaO₂, age, white cells, calcium, urea, LDH, albumin and glucose in the first 48 hours — 3 or more predicts severe disease.

PaO₂ under 8 kPa (60 mmHg)

Age over 55 years

White cell count over 15 × 10⁹/L

Calcium under 2 mmol/L (8 mg/dL)

Urea over 16 mmol/L (BUN over 45 mg/dL)

LDH over 600 IU/L (or AST over 200 IU/L)

Albumin under 32 g/L (3.2 g/dL)

Glucose over 10 mmol/L (180 mg/dL)

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How it works

One point for each criterion within 48 hours of admission (PANCREAS): PaO₂ < 8 kPa (60 mmHg) · Age > 55 · Neutrophilia: WBC > 15 × 10⁹/L · Calcium < 2 mmol/L · Renal: urea > 16 mmol/L · Enzymes: LDH > 600 IU/L or AST > 200 IU/L · Albumin < 32 g/L · Sugar: glucose > 10 mmol/L. Score 0–8; ≥ 3 predicts severe pancreatitis.

The modified Glasgow (Imrie) score (Blamey et al., Gut 1984) is widely used in the UK to predict severe acute pancreatitis. The worst values in the first 48 hours are scored; 3 or more points suggests a severe attack and the need for high-dependency or intensive care assessment. It applies to both alcohol-related and gallstone pancreatitis, and is often used together with CRP above 150 mg/L at 48 hours and the clinical picture.

Worked example

A 63-year-old (age > 55) with white cell count 17 × 10⁹/L and glucose 12 mmol/L, but normal PaO₂, calcium, urea, LDH and albumin, meets 3 criteria: Glasgow-Imrie = 3 / 8 — severe acute pancreatitis likely; consider HDU or ICU assessment.

Sources: Blamey SL et al. Prognostic factors in acute pancreatitis. Gut 1984 · Imrie CW et al. A single-centre double-blind trial of Trasylol therapy in primary acute pancreatitis. Br J Surg 1978

Frequently asked questions

What is a severe Glasgow-Imrie score?

A score of 3 or more within the first 48 hours predicts severe acute pancreatitis. Scores of 0–2 suggest a milder attack, though patients still need monitoring as things can change.

What does PANCREAS stand for?

PaO₂, Age, Neutrophils (white cells), Calcium, Renal function (urea), Enzymes (LDH or AST), Albumin and Sugar (glucose) — the eight criteria of the modified Glasgow score.

How is it different from Ranson’s criteria?

Ranson uses 11 criteria split between admission and 48 hours, with different cut-offs for gallstone and alcoholic pancreatitis. The modified Glasgow score uses eight criteria over 48 hours for any cause.

Is the Glasgow-Imrie score still used?

Yes, especially in the UK, though the revised Atlanta classification defines severity by persistent organ failure, and BISAP or APACHE II are also used.

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Clinical decision tool for education and for use by trained clinicians alongside clinical judgement — not a diagnosis and not a substitute for medical assessment. Scores validated in specific populations may not apply to every patient.