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Tokyo Guidelines 2018 Cholangitis Diagnosis & Severity Grader
x402
Tokyo Guidelines 2018 Cholangitis Diagnosis & Severity Grader is a paid API for AI agents from api.magentlab.com, paid per call via x402, $0.005/call, status unknown (last checked 2026-09-14).
Applies the Kiriyama 2018 TG18 criteria to classify acute cholangitis as definite, suspected, or none, and grades severity as Grade I, II, or III based on caller-supplied clinical findings.
Price / call$0.005
Success—
StatusUnknown
How this service works
Kiriyama 2018 TG18 (=TG13) cholangitis. Definite if one A (fever/chills or elevated WBC/CRP), one B (jaundice or abnormal LFTs), and one C (dilatation or etiology); suspected if A plus B or C; else none. Grade III if any organ dysfunction, else Grade II if any two of WBC, fever >=39C, age >=75, bilirubin >=5, or hypoalbuminemia, else Grade I. Severity none if diagnosis none. Not cholecystitis or Alvarado/RIPASA. magent does not examine, assay, or read imaging. Not a medical device.
Output
Returns the TG18 cholangitis diagnosis category (definite, suspected, or none) and severity grade (Grade I, II, III, or none if diagnosis is none), computed strictly from the caller-supplied boolean and integer inputs according to the Kiriyama 2018 algorithm.
Example use cases
ED triage of suspected cholangitis
“I have a 78-year-old patient in the ED with fever and chills, elevated WBC and CRP, jaundice, and abnormal LFTs, but no biliary dilatation or etiology on imaging. There's no organ dysfunction, but fever is above 39°C and bilirubin is 6 mg/dL. Can you run the TG18 cholangitis scoring for me?”
Post-ERCP severity reassessment
“After ERCP we found biliary dilatation and a clear etiology. Patient is 80 years old, has jaundice, abnormal LFTs, elevated CRP, and hypoalbuminemia, but no organ dysfunction and bilirubin is 3 mg/dL, no fever above 39. What does TG18 say about cholangitis diagnosis and severity grade?”
ICU patient with organ failure workup
“My ICU patient is 55 years old, has fever and chills, elevated WBC, jaundice, abnormal LFTs, biliary dilatation and etiology confirmed. They're also hypotensive requiring vasopressors, their PT-INR is 1.8, creatinine is 2.5, and platelets are 90k. What's the TG18 cholangitis diagnosis and grade?”
Technical details
Endpoint
GEThttps://api.magentlab.com/api/calc/tokyo_cholangitisWhen to prefer
Use this endpoint when you need a structured, reproducible implementation of the Kiriyama 2018 TG18 cholangitis diagnostic and severity algorithm in an automated workflow, EHR integration, or clinical decision-support pipeline. Prefer this over manual scoring when auditability and API-level traceability are needed. Not appropriate for cholecystitis (separate condition), Alvarado/RIPASA appendicitis scoring, or any case where imaging or lab interpretation is required — callers must supply pre-interpreted findings.
Side effects
- Missing required query parameters returns a validation error
- Age outside the accepted range (18–120) may be rejected
- Inconsistent flag combinations (e.g. Grade III organ flags without diagnosis criteria) will still be processed by algorithm logic with no additional warning
- No imaging, lab, or physical exam is performed — results depend entirely on caller accuracy
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Tags
x402
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