estimations of t3 , t4 , free t4 ( ft4 ) and thyrotropin ( tsh ) in blood , qualitative and quantitative analysis of iodoamino acids in serum , protein bound iodine-131 ( pb131i ) , butanol extractable iodine-125 ( be125i ) and measurement of the disappearance rates of 125i-labelled t3 and t4 from plasma were done .
C0229671
serum
C0032105
plasma