Thyroid
Free Thyroxine Index
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Thyroid
TSH + Free T4
This panel measures thyroid-stimulating hormone (TSH) and free thyroxine (Free T4), giving you a snapshot of how your brain and thyroid are communicating. TSH shows how much your brain is signaling for thyroid hormone, while Free T4 reflects how much hormone is actually available in circulation. Together, they help identify issues like sluggish metabolism, fatigue, weight changes, or mood swings—long before symptoms become chronic.
- Health impacts
- Thyroid
At every level
What we'd do at any value.
Reference-range data isn't available for this marker yet.
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LabCorpTest code: 224576$39
What's inside
2 comprehensive markers
- TSH
- Thyroxine (T4) Free, Direct
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