TABLE 1.

Thyroid hormone concentrations, response to TSH administration and selected biochemical and clinical measurements, in mature adult control cats divided into two groups: apparently healthy (group 0) and noncritically ill (group 1)

Variable	Control group 0	Control group 1
Weight (kg)	5.25 [3.8‐6.3]	4.55 [3.52‐5.63]	P = .15
SBP (mm Hg)	120 [108‐132]	118 [110‐147]	P = .88
Heart rate (bpm)	216 [180‐228]	168 [158‐199]	P = .003
Creatinine (mg/dL)	1.28 [1.18‐1.81]	1.37 [1.24‐1.67]	P = .4
BUN (mg/dL)	28 [21.8‐33.3]	25.2 [20.4‐32.2]	P = .71
tT4 (μg/dL)	2.0 [1.72‐2.17]	2.07 [1.61‐2.34]	P = .99
fT4 (ng/dL)	1.2 [1.1‐1.6]	1.4 [1.0‐1.9]	P = .9
TSH (ng/mL)	0.04 [<0.03‐0.07]	0.03 [<0.03‐0.07]	P = .71
After‐stimulation tT4 (μg/dL)	5.2 [4.6‐5.9]	4.7 [3.4‐5.7]	P = .38
T4 ratio	2.4 [2.1‐2.9]	2.3 [1.9‐2.8]	P = .46

Note: Data are presented as median [interquartile range].

Abbreviations: BUN, blood urea nitrogen; SBP, systolic blood pressure; TSH, thyroid stimulating hormone.