Is the TRH test usually unnecessary?
D006801:Humans; D006980:Hyperthyroidism / Q000175:diagnosis*; D011863:Radioimmunoassay; D013972:Thyrotropin / Q000097:blood*; D013973:Thyrotropin-Releasing Hormone
D013973:Thyrotropin-Releasing Hormone; D013972:Thyrotropin