Kocher 1999 four predictors for children with irritable hip
Kocher 1999 four predictors for children with irritable hip: history of fever (oral temperature >38.5 C), non-weight-bearing, ESR >=40 mm/h, and serum WBC >12000/uL; 1 point each, max 4. Returns published predicted probability of septic arthritis vs transient synovitis. Deterministic published score with citation; not a diagnosis, not Caird CRP, not adults, and not an aspiration order.
Asked 1.4x its listed price for its own exampleour last check, 2026-09-28
1 of 1checks answered this week
288 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/kocher
| 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 | $0.007 | 288 ms |
Example input (from the provider)
{
"body": {
"items": [
{
"esr_mm_h": 20,
"history_of_fever": false,
"non_weight_bearing": false,
"wbc_k_ul": 8,
"wbc_ul": 8000
},
{
"esr_mm_h": 20,
"history_of_fever": false,
"non_weight_bearing": false,
"wbc_k_ul": 8,
"wbc_ul": 8000
}
]
},
"method": "POST",
"type": "http"
}
Promised output schema (from the provider)
{
"$schema": "https://json-schema.org/draft/2020-12/schema",
"properties": {
"input": {
"additionalProperties": false,
"properties": {
"body": {
"additionalProperties": false,
"properties": {
"items": {
"items": {
"properties": {
"esr_mm_h": {
"description": "Erythrocyte sedimentation rate in mm/h (1.0-150.0). \u226540 scores 1 (40 scores; 39.9 does not).",
"type": "number"
},
"history_of_fever": {
"description": "History of fever (oral temperature >38.5\u00b0C in Kocher 1999). true or false as assigned by the caller.",
"type": "boolean"
},
"non_weight_bearing": {
"description": "Non-weight-bearing on the affected limb (Kocher 1999). true or false as assigned by the caller.",
"type": "boolean"
},
"wbc_k_ul": {
"description": "WBC in 10^3/\u00b5L (same as 10^9/L). Provide wbc_k_ul or wbc_ul. Range 0.01-500. >12000/\u00b5L scores 1.",
"type": "number"
},
"wbc_ul": {
"description": "WBC in cells/\u00b5L (same as cells/mm^3). Provide wbc_k_ul or wbc_ul. Range 10-500000. >12000 scores 1 (12000 does not; 12001 does).",
"type": "number"
}
},
"required": [
"history_of_fever",
"non_weight_bearing",
"esr_mm_h"
],
"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"
}