Table 1.

ALT, ALP, and BA in 242 Labrador retrievers

	Clinically healthy		Clinically ill
		Subclinically affected n = 122	n = 51
	Normal n = 69Normal histology NL, n = 69	Abnormal histology PH, n = 37 (AH, n = 20, CH, n = 17) RH, n = 85	Abnormal histology PH, n = 45 (AH, n = 7, CH, n = 38) RH, n = 6
ALT (U/L, median and range)	33 (17–197) n = 68	40 (5–575) n = 122	376 (14–1,369) n = 46
ALP (U/L, median and range)	23 (8–109) n = 68	27 (12–478) n = 121	381 (20–1,500) n = 49
BA (μmol/L, median and range)	2 (0–16) n = 69	2 (0–146) n = 120	36 (1–325) n = 44

AH, acute hepatitis; ALT, alanine aminotransferase; ALP, alkaline phosphatase; BA, bile acids; CH, chronic hepatitis; NL, normal liver; PH, primary hepatitis; RH, nonspecific reactive hepatitis.