Discussions By Condition: Thyroid conditions

High normal TSH, low FT4, low normal FT3

Posted In: Thyroid conditions 0 Replies
  • Posted By: Jewelweed
  • June 5, 2011
  • 04:49 PM

Hi,

I've had hypothyroid symptoms, particularly fatigue and coldness. I had blood tests to help with a diagnosis.

Results:
TSH: 2.77 (elevated but "normal")
Free T4: .78 (range .82-1.8)
Free T3: 2.1 (range 2.0-4.0)

This indicates hypothyroidism based on the FT4 and FT3.

However, why isn't my TSH higher? Most people with hypothyroidism have really high TSH even when their FT3 and FT4 are "better" than mine. Shouldn't that low of a FT4 cause a higher TSH to signal the gland to make more T4?

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