What is a radioactive T3 uptake,”Radioactive T3 binds to resin only if TBG is fully saturated with T4.-Increased uptake if there is excess T4-Reduced uptake if there is just an increase in TBG*Causes of increased TBG: Pregnancy, OCP

What is a radioactive T3 uptake,”Radioactive T3 binds to resin only if TBG is fully saturated with T4.-Increased uptake if there is excess T4-Reduced uptake if there is just an increase in TBG*Causes of increased TBG: Pregnancy, OCP

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