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LA Classification Grading (Los Angeles Classification of Oesophagitis)
x402
LA Classification Grading (Los Angeles Classification of Oesophagitis) 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).
Computes the Lundell 1999 Los Angeles (LA) grade (None, A, B, C, or D) for reflux oesophagitis from four caller-assigned boolean findings about mucosal breaks.
Price / call$0.005
Success—
StatusUnknown
How this service works
Lundell 1999 Table 1 Los Angeles classification. Caller-assigned flags. none if no mucosal break (not minimal changes); D if break(s) involve ≥75% of circumference; C if continuous between fold tops but <75%; B if longest break >5 mm not between fold tops; A if ≤5 mm not between fold tops. magent does not interpret images. Not Savary-Miller, GERD diagnosis, Barrett/stricture, or 1994 LA (D was fully circumferential). Not a medical device.
Output
Returns the Lundell 1999 Los Angeles classification grade as a string: 'none' (no mucosal break), 'A' (break ≤5 mm, not between fold tops), 'B' (break >5 mm, not between fold tops), 'C' (break continuous between fold tops but <75% circumference), or 'D' (break(s) ≥75% circumference).
Example use cases
Classifying Grade D circumferential oesophagitis
“My endoscopy report shows mucosal breaks present, the longest is over 5 mm, breaks are continuous between mucosal fold tops, and they involve at least 75% of the oesophageal circumference — run the Lundell 1999 LA grading and tell me the grade.”
Confirming no LA grade when no mucosal break
“The endoscopy showed no mucosal breaks at all — just minimal changes. What does the Lundell 1999 LA classification system return for that? I want to confirm the grade is none, not grade A.”
Grading borderline Grade A vs B finding
“The endoscopist found a mucosal break present, but it's 5 mm or shorter and not continuous between fold tops and not involving 75% of circumference — can you compute the LA oesophagitis grade for me?”
Technical details
Endpoint
GEThttps://api.magentlab.com/api/calc/la_gradingWhen to prefer
Choose this endpoint when you need a precise, rule-based Lundell 1999 Table 1 LA grade computed from caller-assigned endoscopic findings. It is not a substitute for Savary-Miller grading, GERD diagnosis, Barrett's oesophagus assessment, or the 1994 LA proposal (where D required full circumference). It does not interpret images — the caller must supply the boolean flags themselves. It is ideal for automating clinical documentation workflows, audit pipelines, or educational tools that already have structured endoscopic observations.
Side effects
- Missing required boolean query parameters returns a validation error
- Invalid non-boolean value for any parameter causes a 400-level error
- All four booleans must be provided regardless of mucosal_break value
- Network or payment authentication failure (402 x402 protocol) prevents response
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Tags
x402
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