Roy 2021 4PEPS Table 3
Roy 2021 4PEPS Table 3: age <50 −2, 50–64 −1, ≥65 0; chronic respiratory disease −1; HR <80 −1; chest pain and acute dyspnea +1; male +2; estrogen treatment +2; prior VTE +2; syncope +2; 4-week immobility +2; SpO2 <95% +3; calf pain or unilateral edema +3; PE most likely +5. Max 22. Bands: very_low <0, low 0–5, moderate 6–12, high ≥13. Not imaging or D-dimer. magent does not examine the patient or decide PE most likely.
Asked 1.4x its listed price for its own exampleour last check, 2026-09-28
1 of 1checks answered this week
367 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/4peps
| 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 | $0.007 | 367 ms |
Example input (from the provider)
{
"body": {
"items": [
{
"age": 40,
"calf_pain_or_unilateral_edema": false,
"chest_pain_and_acute_dyspnea": false,
"chronic_respiratory_disease": false,
"heart_rate_bpm": 90,
"hormonal_estrogenic_treatment": false,
"immobility_4w": false,
"pe_most_likely": false,
"personal_history_vte": false,
"sex": "female",
"spo2_percent": 98,
"syncope": false
},
{
"age": 40,
"calf_pain_or_unilateral_edema": false,
"chest_pain_and_acute_dyspnea": false,
"chronic_respiratory_disease": false,
"heart_rate_bpm": 90,
"hormonal_estrogenic_treatment": false,
"immobility_4w": false,
"pe_most_likely": false,
"personal_history_vte": false,
"sex": "female",
"spo2_percent": 98,
"syncope": false
}
]
},
"method": "POST",
"type": "http"
}
Promised output schema (from the provider)
{
"$schema": "https://json-schema.org/draft/2020-12/schema",
"properties": {
"input": {
"additionalProperties": false,
"properties": {
"body": {
"additionalProperties": false,
"properties": {
"items": {
"items": {
"properties": {
"age": {
"description": "Age in years (integer 18-120). Roy 2021 Table 3: <50 scores \u22122; 50-64 scores \u22121; \u226565 scores 0 (65-80 and >80 were not independently associated).",
"type": "integer"
},
"calf_pain_or_unilateral_edema": {
"description": "Calf pain and/or unilateral lower-limb edema as assigned by the caller (Roy 2021 Table 3). true scores +3. magent does not examine the patient.",
"type": "boolean"
},
"chest_pain_and_acute_dyspnea": {
"description": "Both chest pain and acute dyspnea present as assigned by the caller (Roy 2021 Table 3). true scores +1. magent does not examine the patient.",
"type": "boolean"
},
"chronic_respiratory_disease": {
"description": "Chronic respiratory disease (Roy 2021 Table 3). true scores \u22121. Assigned by the caller. magent does not examine the patient.",
"type": "boolean"
},
"heart_rate_bpm": {
"description": "Heart rate in beats per minute (integer 30-220). Table 3: <80 scores \u22121. 80-100 was not independently associated; this tool does not add tachycardia points.",
"type": "integer"
},
"hormonal_estrogenic_treatment": {
"description": "Hormonal estrogenic treatment as assigned by the caller (Roy 2021 Table 3). true scores +2.",
"type": "boolean"
},
"immobility_4w": {
"description": "Immobility within 4 weeks (Roy 2021 Table 3 footnote a): surgery, lower limb plaster cast, or bedridden more than 3 days for an acute medical condition. true scores +2. Assigned by the caller. magent does not examine the patient.",
"type": "boolean"
},
"pe_most_likely": {
"description": "PE is the most likely diagnosis as assigned by the caller (Roy 2021 Table 3). true scores +5. magent does not examine the patient or decide PE most likely.",
"type": "boolean"
},
"personal_history_vte": {
"description": "Personal history of VTE as assigned by the caller (Roy 2021 Table 3). true scores +2.",
"type": "boolean"
},
"sex": {
"description": "female or male (Roy 2021 Table 3). Male scores +2. Female scores 0. Assigned by the caller.",
"enum": [
"female",
"male"
],
"type": "string"
},
"spo2_percent": {
"description": "Oxygen saturation percent (50-100). Roy 2021 Table 3: <95 scores +3; 95 and above score 0.",
"type": "number"
},
"syncope": {
"description": "Syncope as assigned by the caller (Roy 2021 Table 3). true scores +2. magent does not examine the patient.",
"type": "boolean"
}
},
"required": [
"age",
"chronic_respiratory_disease",
"heart_rate_bpm",
"chest_pain_and_acute_dyspnea",
"sex",
"hormonal_estrogenic_treatment",
"personal_history_vte",
"syncope",
"immobility_4w",
"spo2_percent",
"calf_pain_or_unilateral_edema",
"pe_most_likely"
],
"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"
}