UCUM units of measure

The Unified Code for Units of Measure — the standard for clinical units (mg/dL, mmol/L, /min…). Returns name, category, and LOINC property.

How to use

Search by code or name. Codes are case-sensitive.

Parameters

Name	Type		Description
query	string	required	Unit code or name.
limit	number	optional	Max results (default 20).

Example input

{
  "query": "mg/dL",
  "limit": 1
}

Example output

{
  "total": 1,
  "rows": [
    {
      "code": "mg/dL",
      "name": "milligram per deciliter",
      "category": "Clinical",
      "loincProperty": "MCnc",
      "source": "LOINC"
    }
  ]
}

Call it (MCP tools/call)

{
  "method": "tools/call",
  "params": {
    "name": "lookup_ucum",
    "arguments": {
      "query": "mg/dL",
      "limit": 1
    }
  }
}

Endpoint: POST https://clinical-mcp.mcharge.in/mcp (Streamable HTTP).

Notes

UCUM use is subject to its license (ucum.org/license).