Samuel 2002 Pediatric Appendicitis Score (PAS) Calculator

x402

Samuel 2002 Pediatric Appendicitis Score (PAS) 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 Samuel 2002 Pediatric Appendicitis Score (max 10) for children aged 4–15 from eight caller-assigned clinical findings

Price / call$0.005

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StatusUnknown

How this service works

Samuel 2002 pediatric appendicitis score from eight caller-assigned findings, ages 4-15, max 10. Cough/percussion/hopping RLQ and RIF tenderness score 2; anorexia, pyrexia, nausea/emesis, leukocytosis, neutrophilia, and migration score 1. Fever and labs are flags, not unpublished cutoffs. Not Alvarado (MANTRELS). Not a diagnosis or operating-room protocol. magent does not examine the abdomen.

Output

Returns the computed Pediatric Appendicitis Score as an integer from 0 to 10, reflecting the sum of eight weighted clinical items: cough/percussion/hopping RLQ tenderness and RIF tenderness each contribute 2 points; anorexia, pyrexia, nausea/emesis, leukocytosis, neutrophilia, and migration of pain each contribute 1 point. The response may include a breakdown of individual item contributions for audit or display purposes.

Example use cases

Pediatric ER triage decision support

“I have a 7-year-old in the ER with right iliac fossa tenderness and cough/percussion/hopping tenderness in the RLQ. She has anorexia and has been vomiting, migration of pain is present, and labs show leukocytosis and neutrophilia. No fever flagged. Can you compute her Samuel PAS score?”

Telemedicine pre-transfer appendicitis risk

“We're considering transferring a 12-year-old boy to a surgical center — he has migration of pain, anorexia, RIF tenderness, and nausea, no cough tenderness, no pyrexia, and labs show leukocytosis but not neutrophilia. What's his PAS score so we can decide urgency?”

Clinical audit of appendicitis scoring accuracy

“For a 15-year-old patient in our audit dataset: anorexia yes, pyrexia yes, nausea yes, leukocytosis yes, neutrophilia yes, migration yes, RIF tenderness yes, cough/percussion/hopping RLQ tenderness yes — please calculate the Samuel 2002 PAS total score.”

Technical details

Endpoint

GEThttps://api.magentlab.com/api/calc/pas

When to prefer

Use this endpoint when you need a structured, reproducible Samuel 2002 PAS computation for a child aged 4–15 with caller-assigned clinical findings and lab flags. Prefer this over Alvarado/MANTRELS scoring endpoints — this is explicitly the Samuel 2002 pediatric-specific tool, not the adult-oriented MANTRELS. Appropriate when a clinician or structured decision-support workflow has already assessed and assigned the eight binary clinical findings and needs a reliable score returned without manual arithmetic.

Side effects

Age outside 4–15 range (e.g., 3 or 16) is rejected with a validation error
Missing any of the nine required query parameters returns an error
Non-boolean values for flag fields cause schema validation failure
Incorrect type for age (non-integer, float) causes rejection
Network or payment errors (402) if x402 payment is not properly attached

Input

Schema · Request body

Field	Type	Description
inputrequired	object
output	object

Output

Schema · Response

{
  "type": "json",
  "example": {
    "path": "/api/calc/pas",
    "count": 2,
    "items": [
      {
        "age": 10,
        "score": 0,
        "formula": "pas",
        "citation": {
          "id": "samuel-2002",
          "doi": "10.1053/jpsu.2002.32893",
          "pmid": "12037754",
          "title": "Pediatric appendicitis score",
          "source": "J Pediatr Surg. 2002;37(6):877-881",
          "authors": "Samuel M"
        },
        "max_score": 10,
        "components": [
          {
            "factor": "cough_percussion_hopping_rlq",
            "points": 0,
            "present": false
          },
          {
            "factor": "anorexia",
            "points": 0,
            "present": false
          },
          {
            "factor": "pyrexia",
            "points": 0,
            "present": false
          },
          {
            "factor": "nausea_emesis",
            "points": 0,
            "present": false
          },
          {
            "factor": "rif_tenderness",
            "points": 0,
            "present": false
          },
          {
            "factor": "leukocytosis",
            "points": 0,
            "present": false
          },
          {
            "factor": "neutrophilia",
            "points": 0,
            "present": false
          },
          {
            "factor": "migration",
            "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.",
        "formula_expression": "PAS = 2*cough_percussion_hopping_rlq + anorexia + pyrexia + nausea_emesis + 2*rif_tenderness + leukocytosis + neutrophilia + migration; max 10"
      },
      {
        "age": 10,
        "score": 0,
        "formula": "pas",
        "citation": {
          "id": "samuel-2002",
          "doi": "10.1053/jpsu.2002.32893",
          "pmid": "12037754",
          "title": "Pediatric appendicitis score",
          "source": "J Pediatr Surg. 2002;37(6):877-881",
          "authors": "Samuel M"
        },
        "max_score": 10,
        "components": [
          {
            "factor": "cough_percussion_hopping_rlq",
            "points": 0,
            "present": false
          },
          {
            "factor": "anorexia",
            "points": 0,
            "present": false
          },
          {
            "factor": "pyrexia",
            "points": 0,
            "present": false
          },
          {
            "factor": "nausea_emesis",
            "points": 0,
            "present": false
          },
          {
            "factor": "rif_tenderness",
            "points": 0,
            "present": false
          },
          {
            "factor": "leukocytosis",
            "points": 0,
            "present": false
          },
          {
            "factor": "neutrophilia",
            "points": 0,
            "present": false
          },
          {
            "factor": "migration",
            "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.",
        "formula_expression": "PAS = 2*cough_percussion_hopping_rlq + anorexia + pyrexia + nausea_emesis + 2*rif_tenderness + leukocytosis + neutrophilia + migration; max 10"
      }
    ]
  }
}

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How this service works

Output

Example use cases

Pediatric ER triage decision support

Telemedicine pre-transfer appendicitis risk

Clinical audit of appendicitis scoring accuracy

Technical details

Endpoint

GEThttps://api.magentlab.com/api/calc/pas

When to prefer

Side effects

Age outside 4–15 range (e.g., 3 or 16) is rejected with a validation error
Missing any of the nine required query parameters returns an error
Non-boolean values for flag fields cause schema validation failure
Incorrect type for age (non-integer, float) causes rejection
Network or payment errors (402) if x402 payment is not properly attached

Input

Schema · Request body

Field	Type	Description
inputrequired	object
output	object

Output

Schema · Response

{
  "type": "json",
  "example": {
    "path": "/api/calc/pas",
    "count": 2,
    "items": [
      {
        "age": 10,
        "score": 0,
        "formula": "pas",
        "citation": {
          "id": "samuel-2002",
          "doi": "10.1053/jpsu.2002.32893",
          "pmid": "12037754",
          "title": "Pediatric appendicitis score",
          "source": "J Pediatr Surg. 2002;37(6):877-881",
          "authors": "Samuel M"
        },
        "max_score": 10,
        "components": [
          {
            "factor": "cough_percussion_hopping_rlq",
            "points": 0,
            "present": false
          },
          {
            "factor": "anorexia",
            "points": 0,
            "present": false
          },
          {
            "factor": "pyrexia",
            "points": 0,
            "present": false
          },
          {
            "factor": "nausea_emesis",
            "points": 0,
            "present": false
          },
          {
            "factor": "rif_tenderness",
            "points": 0,
            "present": false
          },
          {
            "factor": "leukocytosis",
            "points": 0,
            "present": false
          },
          {
            "factor": "neutrophilia",
            "points": 0,
            "present": false
          },
          {
            "factor": "migration",
            "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.",
        "formula_expression": "PAS = 2*cough_percussion_hopping_rlq + anorexia + pyrexia + nausea_emesis + 2*rif_tenderness + leukocytosis + neutrophilia + migration; max 10"
      },
      {
        "age": 10,
        "score": 0,
        "formula": "pas",
        "citation": {
          "id": "samuel-2002",
          "doi": "10.1053/jpsu.2002.32893",
          "pmid": "12037754",
          "title": "Pediatric appendicitis score",
          "source": "J Pediatr Surg. 2002;37(6):877-881",
          "authors": "Samuel M"
        },
        "max_score": 10,
        "components": [
          {
            "factor": "cough_percussion_hopping_rlq",
            "points": 0,
            "present": false
          },
          {
            "factor": "anorexia",
            "points": 0,
            "present": false
          },
          {
            "factor": "pyrexia",
            "points": 0,
            "present": false
          },
          {
            "factor": "nausea_emesis",
            "points": 0,
            "present": false
          },
          {
            "factor": "rif_tenderness",
            "points": 0,
            "present": false
          },
          {
            "factor": "leukocytosis",
            "points": 0,
            "present": false
          },
          {
            "factor": "neutrophilia",
            "points": 0,
            "present": false
          },
          {
            "factor": "migration",
            "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.",
        "formula_expression": "PAS = 2*cough_percussion_hopping_rlq + anorexia + pyrexia + nausea_emesis + 2*rif_tenderness + leukocytosis + neutrophilia + migration; max 10"
      }
    ]
  }
}