Calculators
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122 calculators
Liver disease
AARC-ACLF score
APASL ACLF Research Consortium score and grade for acute-on-chronic liver failure.
ALBI grade
Albumin-bilirubin score and grade for liver function, used in hepatocellular carcinoma.
Autoimmune hepatitis scores
Simplified (2008) and revised original (1999) International Autoimmune Hepatitis Group diagnostic scores.
Baveno VIII rules
cACLD, clinically significant portal hypertension (with ANTICIPATE models), carvedilol and screening endoscopy from liver stiffness, platelets and spleen stiffness.
Child-Pugh score
Severity of chronic liver disease from five clinical and laboratory parameters.
CLIF-C scores
CLIF-C organ failure score and ACLF grade, with the CLIF-C ACLF or CLIF-C AD prognostic score.
CLIF-SOFA score
Chronic liver failure SOFA score across six organ systems, with organ failures and the ACLF grade.
King's College criteria
Poor prognosis in acute liver failure, for referral for emergency liver transplant.
Liver blood test panel
One set of liver tests gives the R factor, Hy's law, FIB-4, APRI, AST to ALT ratio, ALBI, MELD, MELD-Na, MELD 3.0, Child-Pugh and Maddrey together.
MELD 3.0
The updated MELD score adding sex and albumin, used for US liver allocation since 2023.
MELD-Na score
Severity of end-stage liver disease from bilirubin, creatinine, INR and sodium.
MELD-XI
MELD excluding INR, for patients on anticoagulation.
PELD score
Paediatric end-stage liver disease score for children under 12.
R factor
Hepatocellular, cholestatic or mixed pattern of liver injury, with the new R ratio and Hy's law.
RUCAM
Roussel Uclaf Causality Assessment Method for drug-induced liver injury (updated 2016).
Serum-ascites albumin gradient (SAAG)
Whether ascites is due to portal hypertension, with the ascitic protein and neutrophil count.
UKELD score
United Kingdom model for end-stage liver disease, used for listing for liver transplant in the UK.
VOCAL-Penn score
Predicted mortality and decompensation after surgery in cirrhosis.
West Haven criteria
Grading of hepatic encephalopathy, with covert and overt classification.
Wilson disease score
Leipzig score for diagnosing Wilson disease from clinical features, copper studies and genetics.
Fibrosis and MASLD
APRI
AST to platelet ratio index for significant fibrosis and cirrhosis.
BARD score
Simple score to exclude advanced fibrosis in MASLD from BMI, AST/ALT ratio and diabetes.
FAST score
FibroScan-AST score for at-risk steatohepatitis (MASH with NAS 4 or more and F2 or more).
Fatty Liver Index
Likelihood of hepatic steatosis from triglycerides, BMI, GGT and waist circumference.
FIB-4 index
Risk of advanced liver fibrosis from age, AST, ALT and platelet count.
Fibrotic NASH Index (FNI)
Likelihood of fibrotic steatohepatitis (MASH with F2 or more) from AST, HbA1c and HDL.
MASLD fibrosis panel
FIB-4, NAFLD fibrosis score, APRI, BARD and the AST to ALT ratio together, with how well they agree and the next step.
MEFIB index
MR elastography combined with FIB-4 to rule significant fibrosis in or out in MASLD.
NAFLD Activity Score (NAS)
Histological activity score for steatotic liver disease: steatosis, lobular inflammation and ballooning.
NAFLD fibrosis score
Risk of advanced fibrosis in MASLD from age, BMI, diabetes, AST, ALT, platelets and albumin.
SAFE score
Steatosis-associated fibrosis estimator for significant fibrosis in MASLD, for primary care.
Liver cancer and transplant
BCLC staging
Barcelona Clinic Liver Cancer stage for hepatocellular carcinoma (2022 update), with the first-line treatment.
GALAD score
Probability of hepatocellular carcinoma from gender, age, AFP-L3, AFP and DCP (PIVKA-II).
LI-RADS v2018 (CT and MRI)
Liver Imaging Reporting and Data System category for an observation on CT or MRI.
Metroticket 2.0
Tumour burden and AFP limits for liver transplant in hepatocellular carcinoma.
Milan criteria
Transplant eligibility for hepatocellular carcinoma, with the UCSF and up-to-seven criteria.
Pancreas and biliary
Biliary pain and functional biliary disorders (Rome IV)
Rome IV biliary pain, functional gallbladder disorder and functional biliary sphincter of Oddi disorder.
BISAP score
Bedside Index for Severity in Acute Pancreatitis, within the first 24 hours.
CT severity index
Balthazar CT severity index and the modified CT severity index for acute pancreatitis.
Functional pancreatic sphincter of Oddi disorder (Rome IV)
Rome IV criteria for sphincter of Oddi disorder as a cause of recurrent acute pancreatitis.
Glasgow-Imrie criteria
Modified Glasgow (Imrie) score for severe acute pancreatitis within 48 hours.
Harmless Acute Pancreatitis Score (HAPS)
Identifies acute pancreatitis that will follow a non-severe course, at admission.
Ranson's criteria
Severity of acute pancreatitis from 11 features at admission and at 48 hours.
Revised Atlanta classification
Severity of acute pancreatitis and the type of pancreatic collection.
Tokyo Guidelines 2018: acute cholangitis
Diagnosis and severity grade of acute cholangitis (TG18).
Tokyo Guidelines 2018: acute cholecystitis
Diagnosis and severity grade of acute cholecystitis (TG18).
Oesophagus and stomach
Chicago Classification v4.0
High-resolution manometry diagnosis from IRP and the pattern of 10 supine swallows.
Eckardt score
Symptom score for achalasia, with the stage and whether treatment has succeeded.
EREFS
Endoscopic reference score for eosinophilic oesophagitis, with inflammatory and fibrotic subscores.
Gastric ulcer malignancy risk score
Risk that a gastric ulcer is malignant, and whether repeat endoscopy is needed to confirm healing.
Los Angeles classification of oesophagitis
Grade of erosive oesophagitis at endoscopy, with its meaning under Lyon 2.0.
Prague C and M criteria
Length of Barrett's oesophagus, with segment length and surveillance interval.
GI bleeding
ABC score
Age, blood tests and comorbidities score for 30-day mortality in upper and lower GI bleeding.
AIMS65
In-hospital mortality in upper GI bleeding from five features at presentation.
EVendo score
Whether a patient with cirrhosis can avoid screening endoscopy for varices needing treatment.
Forrest classification
Endoscopic stigmata of recent haemorrhage in peptic ulcer bleeding, with rebleeding risk and treatment.
Glasgow-Blatchford score
Pre-endoscopy risk in upper GI bleeding, and who can be managed as an outpatient.
Oakland score
Safe discharge in lower GI bleeding.
Sarin classification of gastric varices
Gastro-oesophageal and isolated gastric varices, with the usual treatment.
Inflammatory bowel disease
Crohn's Disease Activity Index (CDAI)
CDAI with a 7-day diary and PBS standard weights, printable for PBS authority applications.
Harvey-Bradshaw Index
Simple clinical activity index for Crohn's disease, based on the previous day.
Ho index (Edinburgh score)
Day 3 risk of steroid failure and colectomy in acute severe ulcerative colitis.
Mayo score for ulcerative colitis
Full and partial Mayo scores, with the Mayo endoscopic subscore.
Montreal classification
Montreal classification of Crohn's disease (age, location, behaviour) and ulcerative colitis (extent, severity).
PBS standard weight calculator
Standard body weight by sex and height, and the CDAI body weight component.
PUCAI
Paediatric Ulcerative Colitis Activity Index, including for day 3 and 5 decisions in acute severe colitis.
Rutgeerts score
Endoscopic recurrence of Crohn's disease at the neoterminal ileum after ileocolonic resection.
SCCAI
Simple Clinical Colitis Activity Index for ulcerative colitis.
SES-CD
Simple Endoscopic Score for Crohn's disease across five segments.
Travis (Oxford) criteria
Day 3 prediction of colectomy in acute severe ulcerative colitis on intravenous steroids.
Truelove and Witts criteria
Acute severe ulcerative colitis, needing admission for intravenous steroids.
UCEIS
Ulcerative Colitis Endoscopic Index of Severity, scored at the most severely affected area.
Colorectal and endoscopy
ATLAS score (C. difficile)
Predicted cure with treatment for Clostridioides difficile infection.
Boston Bowel Preparation Scale
Bowel preparation quality at colonoscopy, and whether it was adequate for the surveillance interval.
Bowel cancer screening by family history
Risk category and screening plan from the family history of bowel cancer, from the Australian guidelines.
Bristol stool scale
Stool form types 1 to 7, as a guide to transit time.
Polyp surveillance intervals
Surveillance colonoscopy intervals after polypectomy, from the Cancer Council Australia guidelines.
Stool osmotic gap
Secretory versus osmotic chronic diarrhoea from stool sodium and potassium.
Functional gut disorders
Belching disorders (Rome IV)
Rome IV criteria for excessive supragastric and gastric belching.
Cannabinoid hyperemesis syndrome (Rome IV)
Rome IV criteria for cannabinoid hyperemesis syndrome.
Centrally mediated abdominal pain syndrome (Rome IV)
Rome IV criteria for centrally mediated abdominal pain syndrome, formerly functional abdominal pain syndrome.
Chronic nausea and vomiting syndrome (Rome IV)
Rome IV criteria for chronic nausea and vomiting syndrome.
Cyclic vomiting syndrome (Rome IV)
Rome IV criteria for cyclic vomiting syndrome in adults.
Faecal incontinence (Rome IV)
Rome IV criteria for faecal incontinence.
Functional abdominal bloating and distension (Rome IV)
Rome IV criteria for functional bloating and distension.
Functional anorectal pain (Rome IV)
Rome IV criteria for levator ani syndrome, unspecified functional anorectal pain and proctalgia fugax.
Functional chest pain (Rome IV)
Rome IV criteria for functional chest pain of oesophageal origin.
Functional constipation (Rome IV)
Rome IV criteria for functional constipation in adults.
Functional defaecation disorders (Rome IV)
Rome IV criteria for dyssynergic defaecation and inadequate defaecatory propulsion.
Functional diarrhoea (Rome IV)
Rome IV criteria for functional diarrhoea in adults.
Functional dyspepsia (Rome IV)
Rome IV criteria for functional dyspepsia, with postprandial distress and epigastric pain syndromes.
Functional dysphagia (Rome IV)
Rome IV criteria for functional dysphagia.
Functional heartburn (Rome IV)
Rome IV criteria for functional heartburn.
Globus (Rome IV)
Rome IV criteria for globus.
IBS Symptom Severity Score (IBS-SSS)
Severity of irritable bowel syndrome out of 500, from five patient-rated items.
Irritable bowel syndrome (Rome IV)
Rome IV criteria for IBS, with the subtype by predominant bowel habit.
Narcotic bowel syndrome (Rome IV)
Rome IV criteria for narcotic bowel syndrome (opioid-induced gastrointestinal hyperalgesia).
Opioid-induced constipation (Rome IV)
Rome IV criteria for constipation caused by opioids.
Reflux hypersensitivity (Rome IV)
Rome IV criteria for reflux hypersensitivity.
Rumination syndrome (Rome IV)
Rome IV criteria for rumination syndrome in adults.
Unspecified functional bowel disorder (Rome IV)
Rome IV criteria for bowel symptoms that do not fit another functional bowel disorder.
Paediatric functional disorders
Abdominal migraine (Rome IV)
Rome IV criteria for abdominal migraine in children and adolescents.
Aerophagia (Rome IV)
Rome IV criteria for aerophagia in children and adolescents.
Functional abdominal pain, not otherwise specified (Rome IV)
Rome IV criteria for functional abdominal pain NOS in children and adolescents.
Functional nausea and vomiting in children (Rome IV)
Rome IV criteria for functional nausea and functional vomiting in children and adolescents.
Infant colic (Rome IV)
Rome IV clinical criteria for infant colic.
Infant dyschezia (Rome IV)
Rome IV criteria for infant dyschezia.
Infant regurgitation (Rome IV)
Rome IV criteria for regurgitation in an otherwise healthy infant.
Nonretentive faecal incontinence (Rome IV)
Rome IV criteria for nonretentive faecal incontinence in children.
Paediatric cyclic vomiting syndrome (Rome IV)
Rome IV criteria for cyclic vomiting syndrome in children and adolescents.
Paediatric functional constipation (Rome IV)
Rome IV criteria for functional constipation in infants, toddlers and children.
Paediatric functional dyspepsia (Rome IV)
Rome IV criteria for functional dyspepsia in children and adolescents, with subtypes.
Paediatric irritable bowel syndrome (Rome IV)
Rome IV criteria for IBS in children and adolescents.
Paediatric rumination syndrome (Rome IV)
Rome IV criteria for rumination syndrome in children and adolescents.
Toddler's diarrhoea (Rome IV functional diarrhoea)
Rome IV criteria for functional diarrhoea in infants and toddlers.
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