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Alvarado (MANTRELS) Appendicitis Score Calculator
x402
Alvarado (MANTRELS) Appendicitis Score Calculator is a paid API for AI agents from api.magentlab.com, paid per call via x402, $0.005/call, status unknown (last checked 2026-09-15).
Computes the Alvarado 1986 MANTRELS score (0–10) for appendicitis risk stratification from clinical findings, temperature, WBC, and neutrophil percent.
Price / call$0.005
Success—
StatusUnknown
How this service works
Alvarado 1986 MANTRELS score from caller-assigned findings, temperature, WBC, and neutrophil percent (max 10). Bands 0-4, 5-6, and 7-10. Deterministic published score with citation; not a diagnosis or operating-room protocol. magent does not examine the abdomen.
Output
Returns the integer Alvarado MANTRELS total score from 0 to 10, the corresponding risk band (low: 0–4, equivocal: 5–6, high: 7–10), and a citation to the original Alvarado 1986 publication. Does not provide a diagnosis or surgical recommendation.
Example use cases
ED triage appendicitis stratification
“I have an ED patient with classic appendicitis signs — they have pain migration to the RLQ, anorexia, and vomiting. On exam there's RLQ tenderness but no rebound. Temp is 37.8°C, WBC is 14,200/µL, and neutrophils are 82%. What's their Alvarado score?”
Low-risk appendicitis workup decision support
“Patient has nausea and mild RLQ tenderness but no migration, no anorexia, no rebound, temp 36.9°C, WBC 8,500/µL, and 65% neutrophils. Run the Alvarado score so I can decide if imaging is warranted.”
Pediatric appendicitis scoring during on-call consult
“I'm covering call and have a 14-year-old with suspected appendicitis — migration yes, anorexia yes, vomiting yes, RLQ tenderness yes, rebound tenderness yes, temp 38.5°C, WBC 17,000/µL, 88% neutrophils. Give me the MANTRELS score and band.”
Technical details
Endpoint
GEThttps://api.magentlab.com/api/calc/alvaradoWhen to prefer
Use this endpoint when you need a fast, deterministic, published Alvarado 1986 MANTRELS score computed from discrete clinical inputs for appendicitis risk stratification. Prefer it over manual calculation when integrating into clinical decision-support workflows, EHR-adjacent agents, or ED triage pipelines. It is not a replacement for physical examination, imaging, or surgical consultation.
Side effects
- Missing required boolean flags (migration, anorexia, nausea_vomiting, rlq_tenderness, rebound) returns a validation error
- Temperature outside 30.0–45.0°C range is rejected
- WBC value out of range (0.01–500 k/µL or 10–500000/µL) is rejected
- Neutrophil percent outside 0–100 is rejected
- Neither wbc_k_ul nor wbc_ul provided causes an error
- Payment not included or invalid returns 402 Payment Required
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Output
Schema · Response
{
"type": "json",
"example": {
"path": "/api/calc/alvarado",
"count": 2,
"items": [
{
"score": 0,
"wbc_ul": 8000,
"formula": "alvarado",
"citation": {
"id": "alvarado-1986",
"doi": "10.1016/S0196-0644(86)80993-3",
"title": "A practical score for the early diagnosis of acute appendicitis",
"source": "Ann Emerg Med. 1986;15(5):557-564",
"authors": "Alvarado A"
},
"max_score": 10,
"components": [
{
"factor": "migration",
"points": 0,
"present": false
},
{
"factor": "anorexia",
"points": 0,
"present": false
},
{
"factor": "nausea_vomiting",
"points": 0,
"present": false
},
{
"factor": "rlq_tenderness",
"points": 0,
"present": false
},
{
"factor": "rebound",
"points": 0,
"present": false
},
{
"value": 37,
"factor": "temperature_c",
"points": 0,
"present": false
},
{
"value": 8000,
"factor": "leukocytosis",
"points": 0,
"present": false
},
{
"value": 60,
"factor": "left_shift",
"points": 0,
"present": false
}
],
"disclaimer": "Not a medical device. Deterministic published-formula or published-code output for autonomous agents. A licensed clinician remains responsible for patient care and billing submissions.",
"alvarado_band": "0-4",
"temperature_c": 37,
"formula_expression": "Alvarado (MANTRELS) = migration + anorexia + nausea_vomiting + 2*rlq_tenderness + rebound + (temperature_c >= 37.3) + 2*(wbc_ul > 10000) + (neutrophil_percent > 75); max 10; bands 0-4 / 5-6 / 7-10",
"neutrophil_percent": 60
},
{
"score": 0,
"wbc_ul": 8000,
"formula": "alvarado",
"citation": {
"id": "alvarado-1986",
"doi": "10.1016/S0196-0644(86)80993-3",
"title": "A practical score for the early diagnosis of acute appendicitis",
"source": "Ann Emerg Med. 1986;15(5):557-564",
"authors": "Alvarado A"
},
"max_score": 10,
"components": [
{
"factor": "migration",
"points": 0,
"present": false
},
{
"factor": "anorexia",
"points": 0,
"present": false
},
{
"factor": "nausea_vomiting",
"points": 0,
"present": false
},
{
"factor": "rlq_tenderness",
"points": 0,
"present": false
},
{
"factor": "rebound",
"points": 0,
"present": false
},
{
"value": 37,
"factor": "temperature_c",
"points": 0,
"present": false
},
{
"value": 8000,
"factor": "leukocytosis",
"points": 0,
"present": false
},
{
"value": 60,
"factor": "left_shift",
"points": 0,
"present": false
}
],
"disclaimer": "Not a medical device. Deterministic published-formula or published-code output for autonomous agents. A licensed clinician remains responsible for patient care and billing submissions.",
"alvarado_band": "0-4",
"temperature_c": 37,
"formula_expression": "Alvarado (MANTRELS) = migration + anorexia + nausea_vomiting + 2*rlq_tenderness + rebound + (temperature_c >= 37.3) + 2*(wbc_ul > 10000) + (neutrophil_percent > 75); max 10; bands 0-4 / 5-6 / 7-10",
"neutrophil_percent": 60
}
]
}
}Tags
x402
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