Health
eGFR Calculator (MDRD Simplified)
Estimate glomerular filtration rate (eGFR) with the simplified 4-variable MDRD equation (2006 re-expressed, IDMS-traceable): eGFR (mL/min/1.73 m²) = 175 × SCr^−1.154 × Age^−0.203 × (0.742 if female) × (1.212 if Black). The 175 constant replaced the original 186 after IDMS-standardized creatinine calibration. The legacy race coefficient 1.212 is OFF by default (the 2021 CKD-EPI race-free equation removed it) and is provided only for historical comparison. Returns a BSA-INDEXED eGFR for CKD staging (G1–G5); for drug dosing use un-indexed CrCl (Cockcroft-Gault). Derived from Levey AS et al., Ann Intern Med 2006. Valid for stable adults, not AKI/pregnancy/extremes. Not medical advice.
Quick start
Call this tool from your code in three languages.
curl -X POST 'https://api.elysiatools.com/en/api/tools/egfr-mdrd' \
-H 'Content-Type: application/json' \
-d '{"age":60,"sex":"male","serumCreatinine":1.4,"raceCoefficient":false,"decimalPlaces":4}'API reference
Send a POST request with your inputs as JSON. File parameters require a separate upload first.
Endpoint
POST https://api.elysiatools.com/en/api/tools/egfr-mdrdParameters
| Name | Type | Required | Description |
|---|---|---|---|
| age | number | Yes | Patient age in years. Must be ≥18 and ≤120. |
| sex | select | No | — |
| serumCreatinine | number | Yes | Serum creatinine in mg/dL (IDMS-traceable). Must be positive. |
| raceCoefficient | checkbox | No | If checked, multiplies by 1.212 (legacy Black coefficient). OFF by default — modern NKF/ASN guidance uses race-free CKD-EPI 2021. |
| decimalPlaces | number | No |
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:
{
"mcpServers": {
"elysiatools-egfr-mdrd": {
"name": "egfr-mdrd",
"description": "Estimate glomerular filtration rate (eGFR) with the simplified 4-variable MDRD equation (2006 re-expressed, IDMS-traceable): eGFR (mL/min/1.73 m²) = 175 × SCr^−1.154 × Age^−0.203 × (0.742 if female) × (1.212 if Black). The 175 constant replaced the original 186 after IDMS-standardized creatinine calibration. The legacy race coefficient 1.212 is OFF by default (the 2021 CKD-EPI race-free equation removed it) and is provided only for historical comparison. Returns a BSA-INDEXED eGFR for CKD staging (G1–G5); for drug dosing use un-indexed CrCl (Cockcroft-Gault). Derived from Levey AS et al., Ann Intern Med 2006. Valid for stable adults, not AKI/pregnancy/extremes. Not medical advice.",
"baseUrl": "https://api.elysiatools.com/mcp/sse?toolId=egfr-mdrd",
"command": "",
"args": [],
"env": {},
"isActive": true,
"type": "sse"
}
}
}List available tools
After connecting to the SSE endpoint, list the exposed tools:
{
"jsonrpc": "2.0",
"id": 1,
"method": "tools/list"
}Call this tool
Invoke the tool by its id, passing arguments built from its parameters:
{
"jsonrpc": "2.0",
"id": 2,
"method": "tools/call",
"params": {
"name": "egfr-mdrd",
"arguments": {
"age": 60,
"sex": "male",
"serumCreatinine": 1.4,
"raceCoefficient": false,
"decimalPlaces": 4
}
}
}