in order to study the effect of rising thyroid hormone levels in hypothyroidism upon prolactin responses to trh , in relation to changes in basal prolactin concentration and to changes in tsh responses , we followed 18 patients by performing trh tests before and after 14 , 28 , 42 and 56 d on gradually increasing levothyroxine dosages , plus a final test when euthyroidism was achieved .
C0020676
hypothyroidism
C0040165
levothyroxine