Health

Pediatric eGFR Calculator (Schwartz)

Estimate glomerular filtration rate (eGFR) in children (1–18 y) with the Schwartz formula. 2009 Bedside version (recommended, IDMS-traceable creatinine): eGFR = 0.413 × Height(cm) / SCr(mg/dL). 1984 Original version (legacy, pre-IDMS assays): eGFR = 0.55 × Height(cm) / SCr(mg/dL). The coefficient dropped from 0.55 to 0.413 because IDMS-standardized assays return lower creatinine values. Returns a BSA-INDEXED eGFR in mL/min/1.73 m². Derived from Schwartz GJ et al., Am J Kidney Dis 2009 (0.413) and Pediatrics 1976 (0.55). Valid for pediatric stable renal function; use CKD-EPI/MDRD for adults, not for neonates/AKI. Not medical advice.

json· JSON resultOpen tool

Quick start

Call this tool from your code in three languages.

cURL

curl -X POST 'https://api.elysiatools.com/en/api/tools/schwartz-pediatric-gfr' \
  -H 'Content-Type: application/json' \
  -d '{"height":110,"serumCreatinine":0.8,"version":"bedside-2009","decimalPlaces":4}'

API reference

Send a POST request with your inputs as JSON. File parameters require a separate upload first.

Endpoint

HTTP

POST https://api.elysiatools.com/en/api/tools/schwartz-pediatric-gfr

Parameters

Name	Type	Required	Description
height	number	Yes	Body height in cm. Must be positive.
serumCreatinine	number	Yes	Serum creatinine in mg/dL. Must be positive.
version	select	No	—
decimalPlaces	number	No	—

Response format

JSON result

JSON

{
  "key": {...},
  "metadata": {
    "key": "value"
  },
  "error": "Error message (optional)",
  "message": "Notification message (optional)"
}

MCP integration

Add this tool to your Model Context Protocol server so AI agents can list and call it.

Server configuration

Add this block to your MCP client configuration:

mcp.json

{
  "mcpServers": {
    "elysiatools-schwartz-pediatric-gfr": {
      "name": "schwartz-pediatric-gfr",
      "description": "Estimate glomerular filtration rate (eGFR) in children (1–18 y) with the Schwartz formula. 2009 Bedside version (recommended, IDMS-traceable creatinine): eGFR = 0.413 × Height(cm) / SCr(mg/dL). 1984 Original version (legacy, pre-IDMS assays): eGFR = 0.55 × Height(cm) / SCr(mg/dL). The coefficient dropped from 0.55 to 0.413 because IDMS-standardized assays return lower creatinine values. Returns a BSA-INDEXED eGFR in mL/min/1.73 m². Derived from Schwartz GJ et al., Am J Kidney Dis 2009 (0.413) and Pediatrics 1976 (0.55). Valid for pediatric stable renal function; use CKD-EPI/MDRD for adults, not for neonates/AKI. Not medical advice.",
      "baseUrl": "https://api.elysiatools.com/mcp/sse?toolId=schwartz-pediatric-gfr",
      "command": "",
      "args": [],
      "env": {},
      "isActive": true,
      "type": "sse"
    }
  }
}

List available tools

After connecting to the SSE endpoint, list the exposed tools:

tools/list

{
  "jsonrpc": "2.0",
  "id": 1,
  "method": "tools/list"
}

Call this tool

Invoke the tool by its id, passing arguments built from its parameters:

tools/call

{
  "jsonrpc": "2.0",
  "id": 2,
  "method": "tools/call",
  "params": {
    "name": "schwartz-pediatric-gfr",
    "arguments": {
  "height": 110,
  "serumCreatinine": 0.8,
  "version": "bedside-2009",
  "decimalPlaces": 4
}
  }
}

Browse tools Open tool

Pediatric eGFR Calculator (Schwartz)

json· JSON resultOpen tool

curl -X POST 'https://api.elysiatools.com/en/api/tools/schwartz-pediatric-gfr' \ -H 'Content-Type: application/json' \ -d '{"height":110,"serumCreatinine":0.8,"version":"bedside-2009","decimalPlaces":4}'

Name

Type

Required

Description

height

number

Yes

Body height in cm. Must be positive.

serumCreatinine

number

Yes

Serum creatinine in mg/dL. Must be positive.

version

select

—

decimalPlaces

number

—

{ "mcpServers": { "elysiatools-schwartz-pediatric-gfr": { "name": "schwartz-pediatric-gfr", "description": "Estimate glomerular filtration rate (eGFR) in children (1–18 y) with the Schwartz formula. 2009 Bedside version (recommended, IDMS-traceable creatinine): eGFR = 0.413 × Height(cm) / SCr(mg/dL). 1984 Original version (legacy, pre-IDMS assays): eGFR = 0.55 × Height(cm) / SCr(mg/dL). The coefficient dropped from 0.55 to 0.413 because IDMS-standardized assays return lower creatinine values. Returns a BSA-INDEXED eGFR in mL/min/1.73 m². Derived from Schwartz GJ et al., Am J Kidney Dis 2009 (0.413) and Pediatrics 1976 (0.55). Valid for pediatric stable renal function; use CKD-EPI/MDRD for adults, not for neonates/AKI. Not medical advice.", "baseUrl": "https://api.elysiatools.com/mcp/sse?toolId=schwartz-pediatric-gfr", "command": "", "args": [], "env": {}, "isActive": true, "type": "sse" } } }

{ "jsonrpc": "2.0", "id": 2, "method": "tools/call", "params": { "name": "schwartz-pediatric-gfr", "arguments": { "height": 110, "serumCreatinine": 0.8, "version": "bedside-2009", "decimalPlaces": 4 } } }