06/04/2026
Here's the piece that standard thyroid panels miss.
Your body doesn't use T4 directly. It has to convert it into T3, which is the active form that your cells, brain, and metabolism actually run on.
That conversion requires specific nutrients like selenium, zinc, iron, and stable cortisol levels.
When summer heat, stress, or sustained demand depletes those nutrients, the conversion slows down. T4 builds up in your bloodstream while T3 drops at the cellular level.
The result: labs that look fine, but a thyroid that feels depleted.
You may see a normal T4 level on your labs and assume everything is fine. But the tissues that need T3 may not be getting it. That's why you're still exhausted, still struggling with weight, still losing hair.
This is why we draw a comprehensive thyroid assessment that goes beyond TSH and total T4.
We look at Free T3, reverse T3, and nutrient status to reveal whether your body is actually converting and using what it's been given.
✅ A full thyroid conversion panel can reveal what standard testing misses. We assess function, not just levels.
📲Follow for thyroid insights that go beyond TSH
💻 Learn more and book your consultation at wisconsinfunctionalmed.com.