Interactive Clinical Reference · Live calculators

The scoring systems of gastroenterology & hepatology

Every score with a defined formula or point system calculates live below. Descriptive classifications are tap-to-interpret. Defaults are pre-filled so each tool computes immediately — edit the values to fit your patient.

Units. Inputs default to UK conventions — bilirubin & creatinine in µmol/L, urea in mmol/L, albumin in g/L. Where another unit is standard for a given score, a small toggle lets you switch (µmol/L↔mg/dL, urea↔BUN, g/L↔g/dL); conversions happen automatically. This is an educational aid — confirm against a validated calculator and current NICE/BSG/EASL guidance before acting.

Hep · 01

Chronic liver disease & prognosis

How sick is this cirrhotic liver, and does the patient need transplant assessment? Child-Pugh at the bedside; MELD-family and the UK’s UKELD for transplant decisions.

Child-PughCTPCirrhosis severity

Hepatic reserve & 1–2 yr survival; feeds surgical-risk and HCC decisions.

MELD · MELD-Na · MELD 3.0MELD90-day mortality

All three computed together. UK listing uses UKELD; US allocation uses MELD 3.0 (since 2023).

UKELDUKELDUK transplant listing

UK-calibrated 1-yr mortality. ≥49 = minimum elective listing threshold.

Hep · 02

Acute & alcohol-related liver disease

Who has severe alcoholic hepatitis warranting steroids, who is responding, and who with acute liver failure needs emergency transplant referral.

Maddrey’s Discriminant FunctionmDFSeverity of alcoholic hepatitis

≥32 = severe → consider corticosteroids (after excluding sepsis/GI bleed).

Glasgow Alcoholic Hepatitis ScoreGAHSSteroid decision

UK-developed; ≥9 identifies poor prognosis who benefit most from steroids.

Lille ModelLilleDay-7 steroid response

Response after 7 days of steroids. >0.45 = non-responder → stop steroids.

King’s College CriteriaKCCEmergency transplant in ALF

Super-urgent listing criteria — separate logic for paracetamol vs non-paracetamol.

West Haven GradeHEHepatic encephalopathy

Clinical grading of encephalopathy; always seek a precipitant.

Hep · 03

Fibrosis & portal hypertension

Non-invasive triage of advanced fibrosis (the UK MASLD pathway) and portal hypertension.

FIB-4 IndexFIB-4First-line fibrosis triage

NICE/BSG first-line in suspected MASLD. Age-adjusted cut-offs built in.

NAFLD Fibrosis ScoreNFSFibrosis estimate

Captures metabolic factors FIB-4 misses (BMI, diabetes).

APRIAPRIFibrosis (viral hepatitis)

AST-to-platelet ratio; favoured in viral/resource-limited settings.

Transient Elastography (FibroScan)VCTELiver stiffness

Interpret a liver stiffness value (kPa). Thresholds are aetiology-dependent.

Hep · 04

HCC & autoimmune liver disease

Cancer staging that incorporates liver function, transplant eligibility, and an autoimmune-hepatitis diagnostic score.

BCLC StageBCLCHCC staging → treatment

Select the stage to see the linked treatment strategy.

Milan CriteriaMilanTransplant eligibility (HCC)

Single ≤5 cm, or ≤3 lesions each ≤3 cm; no vascular invasion/spread.

Simplified AIH ScoreIAIHGDiagnosing autoimmune hepatitis

≥6 probable, ≥7 definite AIH (a diagnostic, not severity, score).

Bleed · 01

Upper GI bleeding

Glasgow-Blatchford at presentation decides who can go home; full Rockall after endoscopy; Forrest grades the ulcer.

Glasgow-BlatchfordGBSPre-endoscopy · safe discharge?

NICE first-line. 0 (some use ≤1) = very low risk → consider outpatient OGD.

Rockall ScoreRockallRebleeding & mortality

Pre-endoscopy (clinical) or full (post-endoscopy) — toggle below.

AIMS65AIMS65In-hospital mortality

Fast bedside mortality score.

Forrest ClassificationForrestPeptic ulcer stigmata

Select the endoscopic appearance to see rebleed risk & whether to treat.

Bleed · 02

Lower GI bleeding

The UK-developed Oakland score brings “safe for discharge?” logic to the colon.

Oakland ScoreOaklandSafe discharge in LGIB

≤8 → low risk, suitable for outpatient management.

IBD · 01

Ulcerative colitis

Severity (Truelove & Witts), activity (Mayo, SCCAI), endoscopy (UCEIS), extent (Montreal) and the day-3 colectomy rule.

Truelove & WittsT&WDefining acute severe UC

≥6 bloody stools/day + ≥1 systemic marker = acute severe colitis.

Mayo Score (+ Partial)MayoActivity & trial endpoint

Full Mayo (0–12) and Partial Mayo (0–9, no endoscopy) shown together.

UCEISUCEISEndoscopic severity

Reproducible endoscopic score (0–8).

SCCAISCCAIPatient-friendly activity

Symptom-only; ≤2 ≈ remission. Good for remote monitoring.

Travis / Oxford Day-3Day 3Predicting colectomy in ASUC

Day 3 of IV steroids: triggers rescue therapy decision.

Montreal Classification (UC)ExtentDisease extent

Select extent to see treatment-route & surveillance implications.

IBD · 02

Crohn’s disease

The practical Harvey-Bradshaw index, the Montreal phenotype, and the Rutgeerts post-operative recurrence score. (CDAI/SES-CD are trial-oriented — see notes.)

Harvey-Bradshaw IndexHBIClinic activity score

<5 remission · 5–7 mild · 8–16 moderate · >16 severe.

Montreal Classification (Crohn’s)A·L·BPhenotype

Build the A/L/B phenotype code and see prognostic implications.

Rutgeerts ScoreRutgeertsPost-op recurrence

Ileocolonoscopy 6–12 months post ileocaecal resection.

Pancreas · 01

Acute pancreatitis

The UK favours modified Glasgow (Imrie); BISAP is a quick early predictor; revised Atlanta defines severity by organ failure.

Modified Glasgow (Imrie)PANCREASUK-preferred severity

Within 48h: ≥3 = predicted severe → HDU/ICU consideration.

BISAPBISAPEarly mortality predictor

≥3 = substantially higher mortality.

Revised Atlanta SeverityAtlantaDefining severity

Severity is defined by organ failure — select the scenario.

Endoscopy · 01

Oesophagus & luminal endoscopy

Standardised endoscopic descriptors and symptom scores.

Los Angeles ClassificationLAReflux oesophagitis

Select the grade of erosive oesophagitis.

Prague C & MPragueBarrett’s extent

Record circumferential (C) and maximal (M) extent in cm.

Siewert ClassificationSiewertGOJ adenocarcinoma

Select tumour position relative to the GOJ.

Eckardt ScoreEckardtAchalasia symptoms

≤3 = treatment success.

Paris ClassificationParisSuperficial lesion morphology

Select morphology to gauge submucosal-invasion risk.

Boston Bowel Prep ScaleBBPSColonoscopy prep quality

Adequate if total ≥6 and each segment ≥2.

General · 01

Histology & functional

Histological gradings and symptom-based frameworks for gut-brain interaction.

Marsh ClassificationMarshCoeliac histology

Select duodenal histology grade.

Rome IV — IBSRome IVIBS diagnostic criteria

Check the features to test whether IBS criteria are met.

Bristol Stool ChartBSFSStool form

Select stool type.