Thyroxine (T4) constitutes 90% of thyroid hormones, T3 10%; T3 is four times more potent, but T4 is four times more long-lasting.
La thyroxina (T4) constituye el 90% de las hormonas tiroideas, la T3 el 10%. La T3 es cuatro veces más potente pero la T4 dura cuatro veces más.
| Front | Conc, potency & duration of the 2 thyroid hormones |
|---|---|
| Back | T4 = 90% T3 = 10% T3 = four times more potent T4 = four times more long-lasting |
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