Diagnostic Blood Test:
Thyroid Stimulating Hormone (TSH)
Free Thyroxine Index
For a more comprehensive analysis of thyroid health we recommend the Comprehensive Thyroid Panel, available here: https://marekhealth.com/product/comprehensive-thyroid-panel/
Note: This test may exhibit interference when sample is collected from a person who is consuming a supplement with a high dose of biotin. Cease biotin supplementation at least 72 hours prior to blood draw.