Free T3, FT3.
A complementary adjunct to evaluate thyroid hormone levels primarily related to hyperthyroidism and to assess causes of hypothyroidism.
Serum (1 mL) collected in a red- or tiger-top tube.
|Age||Conventional Units||SI Units (Conventional Units × 0.0154)|
|0–3 days||2–7.9 pg/mL||0.03–0.12 pmol/L|
|4–30 days||2–5.2 pg/mL||0.03–0.08 pmol/L|
|1–23 mo||1.6–6.4 pg/mL||0.02–0.1 pmol/L|
|2–6 yr||2–6 pg/mL||0.03–0.09 pmol/L|
|7–17 yr||2.9–5.1 pg/mL||0.04–0.08 pmol/L|
|Adults and older adults||2.6–4.8 pg/mL||0.04–0.07 pmol/L|
|Pregnant women (4–9 mo gestation)||2–3.4 pg/mL||0.03–0.05 pmol/L|
Triiodothyronine, Free has been found in Davis's Lab & Diagnostic Tests
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