Perry 2021 Canadian TIA Score (Table 1) for 7-day stroke or carotid revasculariz
Perry 2021 Canadian TIA Score (Table 1) for 7-day stroke or carotid revascularization after TIA. Clinical: first TIA 2, symptoms >=10 min 2, past carotid stenosis 2, antiplatelet 3, gait 1, unilateral weakness 1, vertigo -3, diastolic >=110 3, dysarthria/aphasia 1. Investigations: AF on ECG 2, infarct on CT 1, platelets >=400 2, glucose >=15 mmol/L 3. Age required, 0 points. Total -3 to 23. Bands <=3 low (0.5%), 4-8 medium (2.3%), >=9 high (5.9%). Not ABCD2. Not a diagnosis or admit order.
Answeringour last check, 2026-09-28
1 of 1checks answered this week
442 msmedian answer time
$0.005listed price per call
$0.005price 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/canadian_tia
| 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 | $0.005 | 442 ms |
Example input (from the provider)
{
"body": {
"items": [
{
"af_on_ecg": false,
"age": 70,
"carotid_stenosis": false,
"diastolic_mm_hg": 80,
"dysarthria_or_aphasia": false,
"first_tia": false,
"gait_disturbance": false,
"glucose_mg_dl": 90,
"glucose_mmol_l": 5,
"infarct_on_ct": false,
"on_antiplatelet": false,
"platelets_10e9_l": 200,
"symptoms_ge_10_min": false,
"unilateral_weakness": false,
"vertigo": false
},
{
"af_on_ecg": false,
"age": 70,
"carotid_stenosis": false,
"diastolic_mm_hg": 80,
"dysarthria_or_aphasia": false,
"first_tia": false,
"gait_disturbance": false,
"glucose_mg_dl": 90,
"glucose_mmol_l": 5,
"infarct_on_ct": false,
"on_antiplatelet": false,
"platelets_10e9_l": 200,
"symptoms_ge_10_min": false,
"unilateral_weakness": false,
"vertigo": false
}
]
},
"method": "POST",
"type": "http"
}
Promised output schema (from the provider)
{
"$schema": "https://json-schema.org/draft/2020-12/schema",
"properties": {
"input": {
"additionalProperties": false,
"properties": {
"body": {
"additionalProperties": false,
"properties": {
"items": {
"items": {
"properties": {
"af_on_ecg": {
"description": "Atrial fibrillation on ECG (Perry 2021 Table 1). true scores 2; false scores 0. magent does not read the ECG.",
"type": "boolean"
},
"age": {
"description": "Age in years (18-120). Required for the adult ED cohort. Does not add points (Perry 2021 Table 1 has no age item).",
"type": "integer"
},
"carotid_stenosis": {
"description": "Past history of carotid stenosis (Perry 2021 Table 1). true scores 2; false scores 0. magent does not read imaging.",
"type": "boolean"
},
"diastolic_mm_hg": {
"description": "Initial triage diastolic blood pressure in mm Hg (20-160). \u2265110 scores 3; 109 scores 0 (Perry 2021 Table 1).",
"type": "number"
},
"dysarthria_or_aphasia": {
"description": "Dysarthria or aphasia on history or examination (Perry 2021 Table 1). true scores 1; false scores 0. Not 3. magent does not examine the patient.",
"type": "boolean"
},
"first_tia": {
"description": "Lifetime first TIA (Perry 2021 Table 1). true scores 2; false scores 0. Caller-assigned; magent does not take a history.",
"type": "boolean"
},
"gait_disturbance": {
"description": "Gait disturbance (Perry 2021 Table 1). true scores 1; false scores 0. magent does not examine the patient.",
"type": "boolean"
},
"glucose_mg_dl": {
"description": "Glucose in mg/dL (50-1000). Converted as mmol/L = mg/dL / 18. Provide this or glucose_mmol_l, not both. \u226515 mmol/L after conversion scores 3.",
"type": "number"
},
"glucose_mmol_l": {
"description": "Glucose in mmol/L (2.8-55.5). Provide this or glucose_mg_dl, not both. \u226515.0 scores 3; 14.9 scores 0 (Perry 2021 Table 1).",
"type": "number"
},
"infarct_on_ct": {
"description": "New or old infarction on CT (Perry 2021 Table 1). true scores 1; false scores 0. magent does not read the CT.",
"type": "boolean"
},
"on_antiplatelet": {
"description": "Already on antiplatelet therapy (Perry 2021 Table 1). true scores 3; false scores 0.",
"type": "boolean"
},
"platelets_10e9_l": {
"description": "Platelet count \u00d710^9/L (1-2000). \u2265400 scores 2; 399 scores 0 (Perry 2021 Table 1).",
"type": "number"
},
"symptoms_ge_10_min": {
"description": "Symptoms lasting 10 minutes or longer (Perry 2021 Table 1). true scores 2; false scores 0. magent does not time the episode.",
"type": "boolean"
},
"unilateral_weakness": {
"description": "Unilateral weakness (Perry 2021 Table 1). true scores 1; false scores 0. magent does not examine the patient.",
"type": "boolean"
},
"vertigo": {
"description": "Vertigo (Perry 2021 Table 1). true scores -3; false scores 0. magent does not examine the patient.",
"type": "boolean"
}
},
"required": [
"age",
"first_tia",
"symptoms_ge_10_min",
"carotid_stenosis",
"on_antiplatelet",
"gait_disturbance",
"unilateral_weakness",
"vertigo",
"diastolic_mm_hg",
"dysarthria_or_aphasia",
"af_on_ecg",
"infarct_on_ct",
"platelets_10e9_l"
],
"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"
}