Unit Code 9404:
T3 (Triiodothyronine), Free, Serum
Useful For
Free T3 is a second- or third-level test of thyroid function. It provides
further confirmation of hyperthyroidism, supplementing the T4,
sensitive thyrotropin (sTSH), and total T3 assays.
Evaluating clinically euthyroid patients who have an altered
distribution of binding proteins
Monitoring thyroid hormone replacement therapy
Method Name
Immunoenzymatic Assay
Reporting Name
T3 (Triiodothyronine), Free, S
Ordering Mnemonic
FT3
Aliases
Free T3 (Triiodothyronine)
Free Triiodothyronine
FT3 (Free Triiodothyronine)
Triiodothyronine, Free
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