Join Life Extension
Help extend the healthy human lifespan by joining today.
View All Benefits
Read The Magazine
Information to extend your life … maybe even save it!
View Current Issue
Integrative approaches for you on a broad range of health issues.
View All Protocols
Newsletter Sign Up
Receive updates in longevity, preventive medicine and disease.
Welcome to Life Extension®
Life Extension's mission is to help you stay younger and healthier longer.
Be the first to Write a Review
Add to Favorites
Not a Member?
Join the Life Extension Foundation® now.
Reap the amazing rewards.
100% Satisfaction Guaranteed.
Product Information Menu
Item Catalog Number: LC001735
Thyroxine-binding globulin (TBG) is one of three proteins responsible for carrying the thyroid hormones thyroxine (T4) and triiodothyronine (T3) in the bloodstream. These hormones can be found in two forms: free or attached to a protein The greatest percentage of thyroid hormones are attached to TBG.
This test measures Thyroxine Binding Globulin in order to check thyroid hormones and can be used to:
This test is not contained in any Life Extension panel. Fasting is not required. Take all medications as prescribed.