Kruis 1984 weighted IBS versus organic score
Kruis 1984 weighted IBS versus organic score. History: pain/flatulence/irregularity triad +34, duration >2 years +16, characteristic pain descriptors +23, alternating constipation/diarrhea +14. Organic flags: abnormal physical or pathognomonic history -47, ESR >10 mm/h -13, leukocytosis -50, anemia -98, blood in stool -98. IBS iff score >= 44. Caller assigns flags. magent does not examine the patient or run labs. Not a diagnosis, not Manning, not Rome.
Asked 1.4x its listed price for its own exampleour last check, 2026-09-28
1 of 1checks answered this week
291 msmedian answer time
$0.005listed price per call
$0.007price it asked us
Paid test badge: not yet. The checks above are free: we call the tool without paying and read the payment request it sends back. The Verified badge needs paid calls whose answers match the promised output, and nobody can buy a badge.
Endpoint
POST https://api.magentlab.com/api/calc/kruis
| Category | Everything else |
|---|---|
| Provider host | api.magentlab.com |
| Networks | eip155:8453 |
| Payment schemes | exact |
| Self-reported calls, 30 days | 0 from 0 payers (the provider's figure, not ours) |
Our checks, last 30 days
| Day | Result | HTTP | Asked | Time |
|---|---|---|---|---|
| 2026-09-28 | valid payment request | 402 | $0.007 | 291 ms |
Example input (from the provider)
{
"body": {
"items": [
{
"abnormal_physical_or_pathognomonic_history": false,
"alternating_constipation_diarrhea": true,
"anemia": false,
"blood_in_stool": false,
"characteristic_pain_descriptors": true,
"duration_gt_2_years": true,
"esr_gt_10_mm_h": false,
"leukocytosis": false,
"symptom_triad": true
},
{
"abnormal_physical_or_pathognomonic_history": false,
"alternating_constipation_diarrhea": true,
"anemia": false,
"blood_in_stool": false,
"characteristic_pain_descriptors": true,
"duration_gt_2_years": true,
"esr_gt_10_mm_h": false,
"leukocytosis": false,
"symptom_triad": true
}
]
},
"method": "POST",
"type": "http"
}
Promised output schema (from the provider)
{
"$schema": "https://json-schema.org/draft/2020-12/schema",
"properties": {
"input": {
"additionalProperties": false,
"properties": {
"body": {
"additionalProperties": false,
"properties": {
"items": {
"items": {
"properties": {
"abnormal_physical_or_pathognomonic_history": {
"description": "Abnormal physical findings and/or history pathognomonic for any diagnosis other than IBS as assigned by the caller (Kruis 1984). true scores -47. magent does not examine the patient.",
"type": "boolean"
},
"alternating_constipation_diarrhea": {
"description": "Alternating bowel movements (constipation/diarrhea) as assigned by the caller (Kruis 1984). true scores +14.",
"type": "boolean"
},
"anemia": {
"description": "Anemia: hemoglobin <12 g/dL in females or <14 g/dL in males as assigned by the caller (Kruis 1984). true scores -98. magent does not run labs.",
"type": "boolean"
},
"blood_in_stool": {
"description": "History of blood in stool as assigned by the caller (Kruis 1984; retained at -98 though not independently significant in the logistic model). magent does not examine stool.",
"type": "boolean"
},
"characteristic_pain_descriptors": {
"description": "Abdominal pain described as burning, cutting, very strong, terrible, feeling of pressure, dull, boring, or not so bad (Kruis 1984 Figure 1). true scores +23. magent does not examine the patient.",
"type": "boolean"
},
"duration_gt_2_years": {
"description": "Those symptoms for more than 2 years as assigned by the caller (Kruis 1984). true scores +16. magent does not take a history.",
"type": "boolean"
},
"esr_gt_10_mm_h": {
"description": "Erythrocyte sedimentation rate >10 mm/h (>20 mm/2 h on the 1984 Westergren form) as assigned by the caller (Kruis 1984). true scores -13. magent does not run labs.",
"type": "boolean"
},
"leukocytosis": {
"description": "Leukocytosis, white-cell count >10,000/\u00b5L, as assigned by the caller (Kruis 1984). true scores -50. magent does not run labs.",
"type": "boolean"
},
"symptom_triad": {
"description": "Abdominal pain, flatulence, and irregularities of bowel movement in the same patient (Kruis 1984 Table 4 A+B+C triad). true scores +34. true or false as assigned by the caller. magent does not examine the patient.",
"type": "boolean"
}
},
"required": [
"symptom_triad",
"duration_gt_2_years",
"characteristic_pain_descriptors",
"alternating_constipation_diarrhea",
"abnormal_physical_or_pathognomonic_history",
"esr_gt_10_mm_h",
"leukocytosis",
"anemia",
"blood_in_stool"
],
"type": "object"
},
"maxItems": 25,
"minItems": 1,
"type": "array"
}
},
"required": [
"items"
],
"type": "object"
},
"headers": {
"additionalProperties": {
"type": "string"
},
"type": "object"
},
"method": {
"const": "POST",
"type": "string"
},
"type": {
"const": "http",
"type": "string"
}
},
"required": [
"type",
"method"
],
"type": "object"
},
"output": {
"properties": {
"example": {
"type": "object"
},
"type": {
"type": "string"
}
},
"required": [
"type"
],
"type": "object"
}
},
"required": [
"input"
],
"type": "object"
}