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1974年Chopra首先建立了血清反T_3的放射免疫分析法,以后其他作者又相继建立了类似的改进的方法。正常人血清中反T_3的浓度很低,仅为T_3浓度的1/4～1/5。正常人反T_3每日的产率与T_3的产率大致相等,但反T_3自血清中清除的速度快,
In 1974 Chopra first established a serum anti-T_3 radioimmunoassay, followed by other authors have successively established a similar improved method. Normal human serum anti-T_3 concentration is very low, only T_3 concentration 1/4 to 1/5. The normal daily rate of anti-T_3 and T_3 yield roughly equal, but anti-T_3 clear from the serum faster,