鉴别原发性与继发性甲状腺功能减退症,应进行的检查是
A TSH B FT<img src="https://renminyixue-prod.oss-cn-qingdao.aliyuncs.com/pu/question/fc8670821e60490f9bab75e289ed8a5a20230526181227.png" /> C FT<img src="https://renminyixue-prod.oss-cn-qingdao.aliyuncs.com/pu/question/40b4af09c5fa4502a50b1a5596b589aa20230526184430.png" /> D TT<img src="https://renminyixue-prod.oss-cn-qingdao.aliyuncs.com/pu/question/fc8670821e60490f9bab75e289ed8a5a20230526181227.png" /> E TT<img src="https://renminyixue-prod.oss-cn-qingdao.aliyuncs.com/pu/question/40b4af09c5fa4502a50b1a5596b589aa20230526184430.png" />