# ALT-70 Cellulitis vs Pseudocellulitis Score (Raff 2017) > 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. ## Facts - Endpoint: GET https://api.magentlab.com/api/calc/alt_70 - Price: $0.005/call - Payment: x402 - Status: unknown - Last checked: 2026-09-14 - Activations on Zero: 0 - Tags: x402 - Canonical page: https://www.zero.xyz/c/alt-70-cellulitis-vs-pseudocellulitis-score-raff-2017-e367cd0e - Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_xWDb5TjT_peGQ7GhKhFoI Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently. ## How to call it through Zero Zero handles the 402 payment challenge and records the run. With the Zero CLI installed (`npm i -g @zeroxyz/cli`): ```sh zero fetch --capability alt-70-cellulitis-vs-pseudocellulitis-score-raff-2017-e367cd0e ``` Example prompt: Run the ALT-70 cellulitis score for a 74-year-old patient with unilateral leg redness, a WBC of 12,500/µL, and a heart rate of 94 bpm — I need to know if this looks more like cellulitis or a pseudocellulitis mimic. ## When to prefer this 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. ## Known failure modes - 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 ## 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. ## Request schema (JSON Schema) ```json { "type": "object", "$schema": "https://json-schema.org/draft/2020-12/schema", "required": [ "input" ], "properties": { "input": { "type": "object", "required": [ "type", "method" ], "properties": { "type": { "type": "string", "const": "http" }, "method": { "enum": [ "GET", "HEAD", "DELETE" ], "type": "string" }, "headers": { "type": "object", "additionalProperties": { "type": "string" } }, "queryParams": { "type": "object", "required": [ "age", "unilateral", "heart_rate_bpm" ], "properties": { "age": { "type": "integer", "description": "Age in years (18-120). Raff 2017: scores 2 when ≥70. Age 69 does not score." }, "wbc_ul": { "type": "number", "description": "WBC in cells/µL (same as cells/mm^3). Provide wbc_k_ul or wbc_ul. Range 10-500000. ≥10,000/µL scores 1." }, "wbc_k_ul": { "type": "number", "description": "WBC in 10^3/µL (same as k/µL or 10^9/L). Provide wbc_k_ul or wbc_ul. Range 0.01-500. ≥10 (10,000/µL) scores 1. 9.9 does not score." }, "unilateral": { "type": "boolean", "description": "Unilateral (asymmetric) lower-extremity involvement (Raff 2017). true or false as assigned by the caller. 3 points if true. magent does not examine the limb." }, "heart_rate_bpm": { "type": "integer", "description": "Heart rate in beats per minute (integer 30-220). Raff 2017: scores 1 when ≥90. Heart rate 89 does not score." } } } }, "additionalProperties": false }, "output": { "type": "object", "required": [ "type" ], "properties": { "type": { "type": "string" }, "example": { "type": "object" } } } } } ``` ## Response schema (JSON Schema) ```json { "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.", "unila … (truncated) ``` ## More - Live health (JSON, refreshed every minute): https://www.zero.xyz/c/alt-70-cellulitis-vs-pseudocellulitis-score-raff-2017-e367cd0e/health.json - [Zero catalog index](https://www.zero.xyz/llms.txt) - [Other services from api.magentlab.com](https://www.zero.xyz/host/api.magentlab.com/llms.txt)