Why Normal Labs Don’t Always Equal Normal Life

TSH: Just the Tip of the Thyroid Iceberg

When it comes to thyroid health, most conventional doctors focus on just one lab marker: TSH (Thyroid Stimulating Hormone).

But here’s the truth: TSH is just the tip of the iceberg—and it leaves millions of women misdiagnosed, dismissed, or stuck in a cycle of fatigue, brain fog, stubborn weight gain, and feeling like “something’s off.”

Let’s unpack why TSH isn’t the whole story—and what else you need to look at to finally feel like yourself again.

What is TSH, Exactly?

TSH is a hormone made by your pituitary gland (a control center in your brain). Its job? To stimulate your thyroid to produce thyroid hormones—specifically T4 and T3.

  • So, when your TSH is high, it usually means your brain is saying: “Hey thyroid, speed it up!”
  • When your TSH is low, the message is: “Whoa! Too much thyroid hormone. Dial it back.”

But here’s the catch: TSH doesn’t tell us how much active thyroid hormone your body is using—or how well your cells are responding to it.

Why TSH Isn’t Enough

You can have a TSH that’s “in range”… and still:

  • Feel tired no matter how much you sleep
  • Struggle to lose weight despite eating clean
  • Deal with depression, anxiety, or mood swings
  • Experience brain fog, dry skin, hair thinning, and cold hands/feet

That’s because TSH is only one piece of the puzzle—and it doesn’t tell us what’s happening at the cellular level.

TSH Levels

The Full ThyroSisters Panel: What’s Under the Iceberg

At ThyroSisters, we look at everything that could be affecting your thyroid, hormones, metabolism, and brain function. Think of it as a functional “deep dive”—not just a quick glance at your labs. Here’s a peek into what we include:

MARKER

WHY IT MATTERS

FREE T3 The active form of thyroid hormone—your feel-good, energy-giving hormone.
FREE T4 The storage form. Your body must convert it into T3.
Reverse T3 Acts like a blocker. Too much? Your T3 can’t work properly.
TPO L& TGB Antibodies Reveal Hashimoto’s, an autoimmune condition often missed for years.
T3 Uptake, T7, and more Help uncover inflammation, nutrient needs, and hormone conversion issues.

Still Feel Off with Normal Labs Results?

ThyroSisters Functional health report

If you’ve ever been told:

  • “Your TSH is normal.”
  • “It’s probably stress.”
  • “Let’s wait and retest next year…”

…yet your body is telling you a different story—you’re not imagining things. You’re just missing the full picture.

Ready for answers?

Let’s have a simple, no-pressure chat about your symptoms and whether deeper thyroid testing might make sense for you.

(30 minutes. Zero pressure. All about YOU.)

Why Normal Labs Don’t Always Equal Normal Life

TSH: Just the Tip of the Thyroid Iceberg

When it comes to thyroid health, most conventional doctors focus on just one lab marker: TSH (Thyroid Stimulating Hormone).

But here’s the truth: TSH is just the tip of the iceberg—and it leaves millions of women misdiagnosed, dismissed, or stuck in a cycle of fatigue, brain fog, stubborn weight gain, and feeling like “something’s off.”

Let’s unpack why TSH isn’t the whole story—and what else you need to look at to finally feel like yourself again.

What is TSH, Exactly?

TSH is a hormone made by your pituitary gland (a control center in your brain). Its job? To stimulate your thyroid to produce thyroid hormones—specifically T4 and T3.

  • So, when your TSH is high, it usually means your brain is saying: “Hey thyroid, speed it up!”
  • When your TSH is low, the message is: “Whoa! Too much thyroid hormone. Dial it back.”

But here’s the catch: TSH doesn’t tell us how much active thyroid hormone your body is using—or how well your cells are responding to it.

Why TSH Isn’t Enough

You can have a TSH that’s “in range”… and still:

  • Feel tired no matter how much you sleep
  • Struggle to lose weight despite eating clean
  • Deal with depression, anxiety, or mood swings
  • Experience brain fog, dry skin, hair thinning, and cold hands/feet

That’s because TSH is only one piece of the puzzle—and it doesn’t tell us what’s happening at the cellular level.

TSH Levels

The Full ThyroSisters Panel: What’s Under the Iceberg

At ThyroSisters, we look at everything that could be affecting your thyroid, hormones, metabolism, and brain function. Here’s a peek into what we include:

  • Free T3 – The active form of thyroid hormone—your feel-good, energy-giving hormone

  • Free T4 – The storage form. Your body must convert it into T3
  • Reverse T3 – Acts like a blocker. Too much? Your T3 can’t work properly
  • TPO & TBG Antibodies – Reveal Hashimoto’s, an autoimmune condition often missed for years
  • T3 Uptake, T7, and more – Help uncover inflammation, nutrient needs, and hormone conversion issues

Think of it as a functional “deep dive”—not just a quick glance at your labs.

ThyroSisters Functional health report

Still Feel Off with Normal Labs Results?

If you’ve ever been told:

  • “Your TSH is normal.”
  • “It’s probably stress.”
  • “Let’s wait and retest next year…”

…yet your body is telling you a different story—you’re not imagining things. You’re just missing the full picture.

Ready for answers?

Let’s have a simple, no-pressure chat about your symptoms and whether deeper thyroid testing might make sense for you.

(30 minutes. Zero pressure. All about YOU.)