ALT-70 Cellulitis vs Pseudocellulitis Score (Raff 2017)

x402

ALT-70 Cellulitis vs Pseudocellulitis Score (Raff 2017) 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 Raff 2017 ALT-70 clinical decision score to differentiate lower-extremity cellulitis from pseudocellulitis based on age, laterality, WBC, and heart rate.

Price / call$0.005

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StatusUnknown

How this service works

Raff 2017 ALT-70 for lower-extremity cellulitis vs pseudocellulitis. Caller-assigned unilateral involvement (3), WBC ≥10,000/µL (1), heart rate ≥90 (1), age ≥70 (2); max 7. Bands 0-2 (pseudocellulitis-leaning), 3-4 (indeterminate), and ≥5 (cellulitis-leaning). Deterministic published score with citation; not a medical device, not a cellulitis diagnosis, and not an antibiotic order. magent does not examine the limb.

Output

Returns the integer ALT-70 total score (0–7) and the corresponding risk band: 0–2 pseudocellulitis-leaning, 3–4 indeterminate, ≥5 cellulitis-leaning. Not a diagnosis or antibiotic order.

Example use cases

ED triage for leg redness

“I have a 68-year-old in the ED with bilateral lower leg redness, WBC of 9,800/µL, and heart rate of 82 bpm — can you run the ALT-70 score so I can see if this leans toward pseudocellulitis?”

Hospitalist admission decision support

“My patient is 71 years old, the involvement is unilateral, WBC came back at 14,200/µL, and heart rate is 96. Calculate the Raff 2017 ALT-70 score and tell me which risk band they fall into.”

Dermatology consult pre-screening

“Before I see this consult, run the ALT-70 for me: patient is 65, bilateral involvement, WBC 11,000/µL, heart rate 88 bpm — is the score in the indeterminate or pseudocellulitis range?”

Technical details

Endpoint

GEThttps://api.magentlab.com/api/calc/alt_70

When to prefer

Use this endpoint when you need a deterministic, citation-backed arithmetic score (Raff 2017) to stratify a lower-extremity skin finding as cellulitis vs pseudocellulitis. Prefer it over general LLM reasoning for reproducibility and auditability. Do not use it as a substitute for clinical examination or as a diagnosis.

Side effects

Missing required parameters (age, unilateral, heart_rate_bpm) returns a 400-level error
Age outside 18–120 or heart rate outside 30–220 may be rejected as out-of-range
Providing neither wbc_ul nor wbc_k_ul omits the WBC criterion from scoring (score may be incomplete)
WBC values outside allowed ranges (10–500,000 µL or 0.01–500 k/µL) may be rejected
Payment failure (x402) returns a 402 status requiring USDC payment before the call proceeds

Input

Schema · Request body

Field	Type	Description
inputrequired	object
output	object

Output

Schema · Response

{
  "type": "json",
  "example": {
    "path": "/api/calc/alt_70",
    "count": 2,
    "items": [
      {
        "band": "0-2",
        "score": 0,
        "formula": "alt_70",
        "citation": {
          "id": "raff-2017",
          "doi": "10.1016/j.jaad.2016.12.044",
          "pmid": "28215446",
          "title": "A predictive model for diagnosis of lower extremity cellulitis: A cross-sectional study.",
          "source": "J Am Acad Dermatol. 2017;76(4):618-625.e2",
          "authors": "Raff AB, Weng QY, Cohen JM, et al."
        },
        "age_years": 40,
        "max_score": 7,
        "components": [
          {
            "factor": "unilateral",
            "points": 0,
            "present": false
          },
          {
            "value": 8000,
            "factor": "leukocytosis",
            "points": 0,
            "present": false
          },
          {
            "value": 80,
            "factor": "tachycardia",
            "points": 0,
            "present": false
          },
          {
            "value": 40,
            "factor": "age_ge_70",
            "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.",
        "unilateral": false,
        "wbc_per_ul": 8000,
        "heart_rate_bpm": 80,
        "formula_expression": "ALT-70 = (unilateral → 3) + (WBC >= 10000/µL → 1) + (heart_rate_bpm >= 90 → 1) + (age >= 70 → 2); max 7; bands 0-2 / 3-4 / >=5"
      },
      {
        "band": "0-2",
        "score": 0,
        "formula": "alt_70",
        "citation": {
          "id": "raff-2017",
          "doi": "10.1016/j.jaad.2016.12.044",
          "pmid": "28215446",
          "title": "A predictive model for diagnosis of lower extremity cellulitis: A cross-sectional study.",
          "source": "J Am Acad Dermatol. 2017;76(4):618-625.e2",
          "authors": "Raff AB, Weng QY, Cohen JM, et al."
        },
        "age_years": 40,
        "max_score": 7,
        "components": [
          {
            "factor": "unilateral",
            "points": 0,
            "present": false
          },
          {
            "value": 8000,
            "factor": "leukocytosis",
            "points": 0,
            "present": false
          },
          {
            "value": 80,
            "factor": "tachycardia",
            "points": 0,
            "present": false
          },
          {
            "value": 40,
            "factor": "age_ge_70",
            "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.",
        "unilateral": false,
        "wbc_per_ul": 8000,
        "heart_rate_bpm": 80,
        "formula_expression": "ALT-70 = (unilateral → 3) + (WBC >= 10000/µL → 1) + (heart_rate_bpm >= 90 → 1) + (age >= 70 → 2); max 7; bands 0-2 / 3-4 / >=5"
      }
    ]
  }
}

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How this service works

Output

Returns the integer ALT-70 total score (0–7) and the corresponding risk band: 0–2 pseudocellulitis-leaning, 3–4 indeterminate, ≥5 cellulitis-leaning. Not a diagnosis or antibiotic order.

Example use cases

ED triage for leg redness

“I have a 68-year-old in the ED with bilateral lower leg redness, WBC of 9,800/µL, and heart rate of 82 bpm — can you run the ALT-70 score so I can see if this leans toward pseudocellulitis?”

Hospitalist admission decision support

“My patient is 71 years old, the involvement is unilateral, WBC came back at 14,200/µL, and heart rate is 96. Calculate the Raff 2017 ALT-70 score and tell me which risk band they fall into.”

Dermatology consult pre-screening

“Before I see this consult, run the ALT-70 for me: patient is 65, bilateral involvement, WBC 11,000/µL, heart rate 88 bpm — is the score in the indeterminate or pseudocellulitis range?”

Technical details

Endpoint

GEThttps://api.magentlab.com/api/calc/alt_70

When to prefer

Side effects

Missing required parameters (age, unilateral, heart_rate_bpm) returns a 400-level error
Age outside 18–120 or heart rate outside 30–220 may be rejected as out-of-range
Providing neither wbc_ul nor wbc_k_ul omits the WBC criterion from scoring (score may be incomplete)
WBC values outside allowed ranges (10–500,000 µL or 0.01–500 k/µL) may be rejected
Payment failure (x402) returns a 402 status requiring USDC payment before the call proceeds

Input

Schema · Request body

Field	Type	Description
inputrequired	object
output	object

Output

Schema · Response

{
  "type": "json",
  "example": {
    "path": "/api/calc/alt_70",
    "count": 2,
    "items": [
      {
        "band": "0-2",
        "score": 0,
        "formula": "alt_70",
        "citation": {
          "id": "raff-2017",
          "doi": "10.1016/j.jaad.2016.12.044",
          "pmid": "28215446",
          "title": "A predictive model for diagnosis of lower extremity cellulitis: A cross-sectional study.",
          "source": "J Am Acad Dermatol. 2017;76(4):618-625.e2",
          "authors": "Raff AB, Weng QY, Cohen JM, et al."
        },
        "age_years": 40,
        "max_score": 7,
        "components": [
          {
            "factor": "unilateral",
            "points": 0,
            "present": false
          },
          {
            "value": 8000,
            "factor": "leukocytosis",
            "points": 0,
            "present": false
          },
          {
            "value": 80,
            "factor": "tachycardia",
            "points": 0,
            "present": false
          },
          {
            "value": 40,
            "factor": "age_ge_70",
            "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.",
        "unilateral": false,
        "wbc_per_ul": 8000,
        "heart_rate_bpm": 80,
        "formula_expression": "ALT-70 = (unilateral → 3) + (WBC >= 10000/µL → 1) + (heart_rate_bpm >= 90 → 1) + (age >= 70 → 2); max 7; bands 0-2 / 3-4 / >=5"
      },
      {
        "band": "0-2",
        "score": 0,
        "formula": "alt_70",
        "citation": {
          "id": "raff-2017",
          "doi": "10.1016/j.jaad.2016.12.044",
          "pmid": "28215446",
          "title": "A predictive model for diagnosis of lower extremity cellulitis: A cross-sectional study.",
          "source": "J Am Acad Dermatol. 2017;76(4):618-625.e2",
          "authors": "Raff AB, Weng QY, Cohen JM, et al."
        },
        "age_years": 40,
        "max_score": 7,
        "components": [
          {
            "factor": "unilateral",
            "points": 0,
            "present": false
          },
          {
            "value": 8000,
            "factor": "leukocytosis",
            "points": 0,
            "present": false
          },
          {
            "value": 80,
            "factor": "tachycardia",
            "points": 0,
            "present": false
          },
          {
            "value": 40,
            "factor": "age_ge_70",
            "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.",
        "unilateral": false,
        "wbc_per_ul": 8000,
        "heart_rate_bpm": 80,
        "formula_expression": "ALT-70 = (unilateral → 3) + (WBC >= 10000/µL → 1) + (heart_rate_bpm >= 90 → 1) + (age >= 70 → 2); max 7; bands 0-2 / 3-4 / >=5"
      }
    ]
  }
}