Lab

Free T3

No reviews yet

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.

Thyroid

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)

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.

No reviews yet

Reviews

erica and kelsey
We are Root

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.
root badge

You may also benefit from these products

immune support supplement

Immune Support

Be that friend who never gets sick
$44.00
Advanced Thyroid Panel

Advanced Thyroid Panel

TSH, Free T4, Free T3, Thyroid Peroxidase Antibodies, Reverse T3, Selenium
$90.00
A bottle of B Complex supplements

B Complex

You won't B tired when you take this one
$27.00
Root Omega 3

Omega 3

Fish oil that goes down easy and boosts Omega-3 levels
$56.00