Health

Creatinine Clearance Calculator (Cockcroft-Gault)

Estimate creatinine clearance (CrCl) with the Cockcroft-Gault equation: CrCl (mL/min) = [(140 − Age) × Weight(kg)] / [72 × SCr(mg/dL)] × 0.85 if female. Choose the weight basis: Actual Body Weight (ABW), Ideal Body Weight (IBW, Devine 1974), or Adjusted Body Weight (AdjBW = IBW + 0.4 × (ABW − IBW), for obese patients). Optional SCr floor at 1.0 mg/dL for elderly / low-muscle-mass patients. Returns an UN-indexed CrCl in mL/min — the value drug-dosing tables use (for BSA-indexed eGFR use MDRD or CKD-EPI). Derived from Cockcroft & Gault, Nephron 1976. Valid for stable renal function in adults. 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/creatinine-clearance-cockcroft' \
  -H 'Content-Type: application/json' \
  -d '{"age":70,"sex":"male","weight":75,"height":0,"serumCreatinine":1,"weightBasis":"ABW","roundScr":false,"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/creatinine-clearance-cockcroft

Parameters

Name	Type	Required	Description
age	number	Yes	Patient age in years. Must be ≥18 and ≤120.
sex	select	No	—
weight	number	Yes	Actual body weight in kg. Must be positive.
height	number	No	Height in cm. Required when weight basis is IBW or AdjBW.
serumCreatinine	number	Yes	Serum creatinine in mg/dL. Must be positive.

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-creatinine-clearance-cockcroft": {
      "name": "creatinine-clearance-cockcroft",
      "description": "Estimate creatinine clearance (CrCl) with the Cockcroft-Gault equation: CrCl (mL/min) = [(140 − Age) × Weight(kg)] / [72 × SCr(mg/dL)] × 0.85 if female. Choose the weight basis: Actual Body Weight (ABW), Ideal Body Weight (IBW, Devine 1974), or Adjusted Body Weight (AdjBW = IBW + 0.4 × (ABW − IBW), for obese patients). Optional SCr floor at 1.0 mg/dL for elderly / low-muscle-mass patients. Returns an UN-indexed CrCl in mL/min — the value drug-dosing tables use (for BSA-indexed eGFR use MDRD or CKD-EPI). Derived from Cockcroft & Gault, Nephron 1976. Valid for stable renal function in adults. Not medical advice.",
      "baseUrl": "https://api.elysiatools.com/mcp/sse?toolId=creatinine-clearance-cockcroft",
      "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": "creatinine-clearance-cockcroft",
    "arguments": {
  "age": 70,
  "sex": "male",
  "weight": 75,
  "height": 0,
  "serumCreatinine": 1,
  "weightBasis": "ABW",
  "roundScr": false,
  "decimalPlaces": 4
}
  }
}

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