Hope Chipper is feeling better...
Here's a link to evaluating liver enzymes... may or may not be helpful...
The diagnostic approach to asymptomatic dogs with elevated liver enzyme activities - Veterinary Medicine=
Some excerpts:
Although elevated serum hepatobiliary enzyme activities are frequently identified, they do not necessarily indicate clinically important hepatic disease.
Alanine aminotransferase
Increases in serum ALT activity are considered liver-specific in dogs. ALT activity can increase with severe muscle necrosis, but simultaneous evaluation of serum creatine kinase activity can rule out a muscle source.3,4 ALT is a cytosolic enzyme, and leakage occurs with damage to hepatobiliary membranes. The magnitude of serum ALT activity elevation is roughly proportional to the number of injured hepatocytes.3 Serum ALT activity may also increase because of induction of enzyme synthesis by corticosteroid use and, possibly to a lesser extent, by phenobarbital therapy.3,5 Serum ALT half-life is 2.5 days.6
Increases in serum ALT activity have the highest sensitivity (80% to 100%) for hepatic inflammation and necrosis, vacuolar hepatopathy, and primary neoplasia (hepatocellular carcinoma, cholangiocarcinoma) but have less sensitivity (50% to 60%) in cases of hepatic congestion, metastatic neoplasia, and portosystemic vascular anomalies.3
Increases in serum liver enzyme activities are sensitive indicators of hepatobiliary disease, but these activities can be elevated secondary to various endocrinopathies, gastrointestinal disease, pancreatic disease, systemic disease, and enzyme induction. In asymptomatic patients, a systematic approach is required to obtain a definitive diagnosis. A careful review of the patient's history is essential to uncover vague clinical signs that the owner may have missed and to identify any potential exposure to hepatotoxic agents. A complete minimum database, including a complete blood count and urinalysis, is required to rule out an underlying extrahepatic disease. In some cases, sequential monitoring may be elected; however, persistent elevation, marked elevations, concurrent increases in serum bilirubin concentrations, or concurrent decreases in albumin concentrations warrant further investigation, including diagnostic imaging and, in many cases, hepatic biopsy.