Essential Thyroid Function Panel
A thyroid function assessment that measures antibodies and reverse T3 to uncover the root causes of fatigue, weight changes, and metabolic issues.
What we test
- Selenium
- Iodine, Serum/Plasma
- Free T4
- Free T3
- Thyroid-Stimulating Hormone
- Free T4 Index (T7)
- T3, Uptake
- T4 (Thyroxine), Total
- Reverse T3
- Thyroglobulin antibodies
- Thyroid Peroxidase Antibodies (TPO)
FAQ
Answers to common questions about panels, results, and your plan.
Kari Natwick
ari Natwick, RDN, LD, IFNCP, CGN, is an integrative and functional dietitian specializing in gut health, hormones, perimenopause/menopause, metabolic health, and the gut-brain connection. Kari works with people who want to understand the deeper patterns behind their symptoms, not simply manage them. Her approach combines comprehensive lab testing with nutrition, lifestyle, and evidence-informed functional medicine to connect the dots between digestive health, hormones, immune function, nutrient status, stress, and overall well-being. With a focus on personalized, practical care, Kari helps you understand what your labs mean in the context of your whole health picture and turns that information into clear, actionable next steps.
My websiteFocus areas
Gastrointestinal Health
Immune Health
Metabolic Health
Women's Health
States of practice
Alaska
California
New Jersey
Oregon
Texas