Table 3. Ratios (± SD) of free and total T4:T3 in interspecies comparison.

Species	Ratio fT4:fT3	Ratio tT4:tT3
Mole-rat	0.70±0.45* 0.85±0.43†	18.60±6.98
Rat	7.28±1.87	16.24±4.28
Guinea pig	9.63±1.50	26.43±9.51

fT4:fT3 ratios were obtained from the data shown in Figure 2 and tT4:tT3 ratios were obtained from data shown in Figure 3. See “Results” section for statistical details.

*: scenario 2 (n = 32).

^†: scenario 1 (n = 24).