Lab
Free T3
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Free T3
Free T3 is the active thyroid hormone that drives your metabolism and energy production. Testing this hormone helps uncover issues that may be causing fatigue, weight changes, or low energy levels, even when other thyroid markers seem normal.
What to Expect
Panel is drawn at Quest Labs. Locations are available nationwide. Fasting is preferred for more accurate results.
Details
Biomarker(s) tested:
Free T3 (free triiodothyronine)
Free T3 (free triiodothyronine)
Results
The turnaround time for results and Root doctor insights is typically 3–4 weeks post-draw. Once ready, the Root team will upload them to your personal Root dashboard and alert you for viewing.
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Reviews
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We're a team of doctors and dietitians who solve hormone, gut, and autoimmune issues at the Root cause.
We empower you with the right information for a healthy lifestyle and healing from the inside out. We support you through our expert functional medicine guidance, online community, digital meal plans, and tried and true supplements straight from our own clinical protocols.
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