Scalea 1999 FAST four Ps (pericardial, perihepatic, perisplenic, pelvic)
Scalea 1999 FAST four Ps (pericardial, perihepatic, perisplenic, pelvic). Each window is a caller-assigned boolean for free intraperitoneal fluid (perihepatic/Morison, perisplenic, pelvic) or pericardial fluid. positive is true if any window is positive and false only if all four are negative. Sequence is not required. Not eFAST pleural views. Not Huang or McKenney scoring. Not a laparotomy order. magent does not scan or interpret ultrasound. Not a medical device.
Asked 1.4x its listed price for its own exampleour last check, 2026-09-28
1 of 1checks answered this week
262 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/fast
| 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 | $0.007 | 262 ms |
Example input (from the provider)
{
"body": {
"items": [
{
"pelvic": false,
"pericardial": false,
"perihepatic": false,
"perisplenic": false
},
{
"pelvic": false,
"pericardial": false,
"perihepatic": false,
"perisplenic": false
}
]
},
"method": "POST",
"type": "http"
}
Promised output schema (from the provider)
{
"$schema": "https://json-schema.org/draft/2020-12/schema",
"properties": {
"input": {
"additionalProperties": false,
"properties": {
"body": {
"additionalProperties": false,
"properties": {
"items": {
"items": {
"properties": {
"pelvic": {
"description": "Pelvic window positive for free intraperitoneal fluid as assigned by the caller (Scalea 1999 four Ps). true or false. magent does not interpret ultrasound.",
"type": "boolean"
},
"pericardial": {
"description": "Pericardial window positive for pericardial fluid as assigned by the caller (Scalea 1999 four Ps). true or false. magent does not interpret ultrasound.",
"type": "boolean"
},
"perihepatic": {
"description": "Perihepatic (Morison / right-upper-quadrant) window positive for free intraperitoneal fluid as assigned by the caller (Scalea 1999 four Ps). true or false. magent does not interpret ultrasound.",
"type": "boolean"
},
"perisplenic": {
"description": "Perisplenic (left-upper-quadrant) window positive for free intraperitoneal fluid as assigned by the caller (Scalea 1999 four Ps). true or false. magent does not interpret ultrasound.",
"type": "boolean"
}
},
"required": [
"perihepatic",
"perisplenic",
"pelvic",
"pericardial"
],
"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"
}