Free T3 Test
Blood (Serum)
Endocrinology
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Free T3 Test Normal Reference Ranges
| Parameter | Normal Range |
|---|---|
| Adults | 2.3–4.2 pg/mL |
An elevated Free T3 alongside a suppressed TSH generally indicates hyperthyroidism, while a low Free T3 in the setting of severe illness (rather than thyroid disease itself) is sometimes seen in a pattern doctors call 'sick euthyroid syndrome.'
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Quick Facts
CategoryEndocrinology
Specimen TypeBlood (Serum)
Organ System—
Available At0 labs
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