Primary Causes & Action Plans
Free T3
Active Metabolic Fuel The active form of thyroid hormone that regulates metabolism.
Target 3.2 - 4.2 pg/mL
Suggested Action Plan
Ensure adequate Selenium and Iodine intake through whole foods.
Also in Hormonal Health
Explore by Biomarker
Getting Started
1
Complete Thyroid Panel
Move beyond TSH; test Free T4, Free T3, and Reverse T3 to see how your body is actually converting the hormone.
2
Micronutrient Support
Ensure your diet contains adequate Selenium, Zinc, and Iodine, which are essential for thyroid hormone synthesis.
3
Stress Modulation
High cortisol inhibits T4 to T3 conversion; implement daily stress-reduction techniques to support your metabolism.
Why I built this guide.
""
Explore More
Get a Discount
Save $25 with our verified Function Health promo codes
Read Our Review
Our data-driven review of Function Health covering 14 insurers
Is It Worth It?
We analyzed costs across 42 states to answer this question
Compare All Insurers
See how every major insurer compares to Function Health