GPT and Hypocholesterolemia: Mildly increased liver enzyme activity (mean ALP 203 IU/L, reference range 16–140 IU/L; mean ALT 133 IU/L, reference range 12–54 IU/L) and mild hypocholesterolemia (mean 96 mg/dL, reference range 124–344 mg/dL) were documented in all three dogs, as well as a slight-to-mild anion gap metabolic acidosis (mean 21.5, reference range 11.2–19.9) (Table 2).