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Free T4

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Free T4

Free T4, or thyroxine, is a hormone made by the thyroid gland. It helps show how well your thyroid is working and can help identify conditions like an under-active thyroid (hypothyroidism) or an overactive thyroid (hyperthyroidism).

Thyroid
Biomarker(s) tested:

Free T4 (Thyroxine)

Panel is drawn at Quest Labs. Locations are available nationwide.

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erica and kelsey
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