You are tired in a way sleep does not fix. Your hair is thinning, your hands are cold, your weight will not move, and your labs came back with two words: everything's normal.
In almost every case, "normal" means one number was checked. TSH. That single marker is a pituitary signal, not a measure of how much usable thyroid hormone is reaching your cells.
What a complete thyroid panel includes
- TSH - the brain's request for more thyroid hormone.
- Free T4 - the storage form your thyroid produces.
- Free T3 - the active form your cells actually use for energy, temperature and metabolism.
- Reverse T3 - the brake pedal your body applies under stress, illness or restrictive dieting.
- TPO and TgAb antibodies - the immune markers that reveal Hashimoto's years before TSH shifts.
- Thyroid binding proteins and nutrient cofactors - iron, ferritin, selenium, zinc, vitamin D.
Why the pattern matters more than the number
Two people can share the same TSH and have completely different physiology. One converts T4 to T3 efficiently. The other is running high Reverse T3 because of chronic stress, low ferritin or inflammation, so the hormone exists in the bloodstream but never gets to work. Only one of those people feels well, and TSH cannot tell them apart.
Common patterns we see in Centennial patients
- Normal TSH, low Free T3, elevated Reverse T3 - a conversion problem, usually stress or nutrient driven.
- Normal TSH and T4 with positive TPO antibodies - early autoimmune activity that standard care will not flag for years.
- Medicated patients on levothyroxine with a perfect TSH who still feel unwell because only T4 is being replaced.
What we do with the results
A full panel is the starting point, not the finish line. If antibodies are elevated, we look at gut health, food allergies and toxin exposure, because the immune system is the thing driving the thyroid, not the other way around. If conversion is poor, we work on stress physiology, blood sugar, iron status and the nutrients required for that conversion.
The goal is not to normalize a number. It is to give your body back the raw materials and the environment it needs to make and use thyroid hormone properly.
When to get tested
If you have fatigue, cold intolerance, hair loss, constipation, brain fog, stubborn weight or a family history of thyroid disease, a complete panel is worth running even if you were told you are fine. Most of our patients have been told they are fine at least twice before they walk through our door.
We run comprehensive thyroid testing for patients across Centennial, Greenwood Village, Lone Tree, Parker, Littleton, Highlands Ranch and the south Denver metro, and virtually with at-home kits for patients outside Colorado.