Nadler 1962 predicted blood volume in liters from height, weight, and sex (separ
Nadler 1962 predicted blood volume in liters from height, weight, and sex (separate male and female equations). Deterministic published arithmetic with citation. For adults as published; this tool does not take age. Not a transfusion order, Lemmens–Bernstein–Brodsky estimate, or 70 mL/kg rule of thumb.
Asked 1.4x its listed price for its own exampleour last check, 2026-09-28
1 of 1checks answered this week
240 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/nadler
| 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 | $0.007 | 240 ms |
Example input (from the provider)
{
"body": {
"items": [
{
"height_cm": 170,
"height_in": 66.92913385826772,
"sex": "male",
"weight_kg": 70,
"weight_lb": 154.3236
},
{
"height_cm": 170,
"height_in": 66.92913385826772,
"sex": "male",
"weight_kg": 70,
"weight_lb": 154.3236
}
]
},
"method": "POST",
"type": "http"
}
Promised output schema (from the provider)
{
"$schema": "https://json-schema.org/draft/2020-12/schema",
"properties": {
"input": {
"additionalProperties": false,
"properties": {
"body": {
"additionalProperties": false,
"properties": {
"items": {
"items": {
"properties": {
"height_cm": {
"description": "Height in centimeters. Provide height_cm or height_in.",
"type": "number"
},
"height_in": {
"description": "Height in inches. Converted as cm = in * 2.54.",
"type": "number"
},
"sex": {
"description": "Sex used by Nadler 1962 (separate male and female equations).",
"enum": [
"female",
"male"
],
"type": "string"
},
"weight_kg": {
"description": "Weight in kilograms. Provide weight_kg or weight_lb.",
"type": "number"
},
"weight_lb": {
"description": "Weight in pounds. Converted as kg = lb * 0.45359237.",
"type": "number"
}
},
"required": [
"sex"
],
"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"
}