Ikhithi yokuhlola ye-TT4

I-Thyroxine (T4), noma i-3,5,3',5'-tetraiodothyronine, iyi-hormone yegilo enesisindo samangqamuzana esicishe sibe ngu-777Da esikhishelwa ekuhambeni ngendlela yamahhala, ngaphezu kuka-99% eboshelwe kumaprotheni ku-plasma futhi amanani amancane kakhulu e-T4 (FT4) yamahhala engaboshelwe kumaprotheni ku-plasma.Imisebenzi eyinhloko ye-T4 ihlanganisa ukulondoloza ukukhula nokuthuthuka, ukukhuthaza umzimba, ukukhiqiza imiphumela yemizwa nenhliziyo, ithonya ukuthuthukiswa kobuchopho, futhi iyingxenye yohlelo lokulawula i-hypothalamic-pituitary-thyroid hormone, enendima ekulawuleni umzimba.I-TT4 isho isamba se-thyroxine yamahhala neboshiwe ku-serum.Ukuhlolwa kwe-TT4 kusetshenziswa emtholampilo njengokuxilongwa okuyisizayo kokungasebenzi kahle kwe-thyroid, futhi ukwanda kwayo kubonakala ngokuvamile ku-hyperthyroidism, i-subacute thyroiditis, i-serum ephezulu ye-thyroxine-binding globulin (TBG), kanye ne-thyroid hormone insensitivity syndrome;ukwehla kwawo kubonakala ku-hypothyroidism, ukuntuleka kwe-thyroid, i-lymphoid Goiter engapheli, njll.