How to Look Up Biomarker Reference Ranges with Claude
Look up biomarker reference ranges with Claude and ToolRouter. Standard reference intervals for any blood test marker.
Tool
Claude combines biomarker reference data with explanations of why ranges vary and what the edges of normal mean in clinical practice. It explains the difference between a reference range and a treatment threshold, and helps you understand when a borderline value is concerning and when it isn't.
Connect ToolRouter to Claude
1Open connector settings Open Settings
2Add a custom connector with these details
Name
ToolRouterURL
https://api.toolrouter.com/mcp3Let Claude set you up Open Claude
Steps
Once connected (see setup above), use the Lab Results tool:
- Ask: "What is the reference range for serum ferritin using lab-results?"
- Claude returns the range, units, and clinical significance
- Ask: "How does this range differ for men vs women and for different age groups?"
- Request: "My level is 18 µg/L — where does that sit in the clinical picture?"
Example Prompt
Try this with Claude using the Lab Results tool
Look up the reference ranges for ferritin, serum iron, transferrin saturation, and TIBC using lab-results. Explain what each measures and how they work together to assess iron status.
Tips
- Ask about sex-specific ranges for markers like haemoglobin, ferritin, and creatinine
- Request fasting vs non-fasting ranges for glucose and triglycerides
- Ask Claude to explain the difference between reference range and optimal range for wellness markers