Table 1.

Characteristics of 976 apparently healthy adult cats and 64 apparently healthy young cats presenting to first opinion practice

	Adult cats	Adult healthy cats	Adult USG <1.035	Young cats (n = 64)
	(n = 976)	(n = 949)	(n = 121)
Age (years), median (range)	6 (0.5–21)	6 (0.5–21.0)	11 (0.5–20.0)	0.35 (0.15–0.45)
Sex, female (%)	56	56	61	56
Visit reason
Annual examination or vaccination	551	532	65	3
Elective anesthesia	409	402	54	61
Minor medical	16	16	2	0
USG, median (range)	1.050 (1.005–1.090)	1.050 (1.005–1.090)	1.025 (1.005–1.034)	1.050 (1.017–1.080)

USG = urine specific gravity