Lab Test Interpreter
Input your lab values for ferritin, zinc, vitamin D, biotin, and thyroid markers (TSH, T3, T4) to get a plain-language interpretation. See how your levels compare to optimal ranges for hair and nail health, not just "normal" reference ranges, and get targeted supplement recommendations.
Lab Test Interpreter
Enter your blood test results to see how they relate to hair & nail health — with optimal ranges beyond standard lab "normal"
Which test results do you have?
Select all markers you have values for
How This Tool Works
Enter Your Info
Answer questions about your age, health goals, and current situation.
Get Results
Our evidence-based algorithm processes your data instantly in your browser.
Take Action
Review recommendations with linked evidence and discuss with your provider.
Get the complete Vitamin Handbook
12-chapter PDF guide covering dosing, interactions, and a 90-day supplement plan.
Disclaimer:This tool is for informational purposes only and does not constitute medical advice. Always consult your healthcare provider before starting any supplement regimen.
Not sure which supplement is right for you?
Take our 2-minute Vitamin Finder quiz and get personalized recommendations based on your profile.