Direct in vivo injection of 131I-GMS and its distribution and excretion in rabbit

Table 4 Effects of the administration of ¹³¹I-labeled gelatin microspheres on thyroid function (n = 4)

	FT3 (pmol/L)	FT4 (pmol/L)	TSH (mU/L)
Before administration	5.55 ± 0.57	19.61 ± 1.54	< 0.005
After administration
1 d	4.54 ± 1.53	19.31 ± 6.47	< 0.005
4 d	5.09 ± 1.68	21.31 ± 4.68	< 0.005
8 d	3.29 ± 0.83	14.23 ± 2.81	< 0.005
16 d	5.53 ± 1.01	19.95 ± 2.56	< 0.005
24 d	5.31 ± 0.57	20.39 ± 2.38	< 0.005
32 d	4.66 ± 2.17	19.18 ± 2.98	< 0.005
48 d	6.02 ± 2.77	20.94 ± 10.78	< 0.005
64 d	5.34 ± 1.34	21.23 ± 3.42	< 0.005

FT3: Free triiodothyronine; FT4: Free thyroxin; TSH: Thyrotropic-stimulating hormone.