Ron Hines DVM PhD
To see what normal blood and urine values are for your pet, go here
For an explanation of causes of most abnormal blood and urine tests go here
To see how tests are often grouped, go here
Health Problems That Can Cause AST Levels To Be Elevated In Your Pet’s Blood:
All infectious, toxic, metabolic and cancerous diseases that sometimes affect your dog or cat’s liver can cause your pet’s AST blood levels to rise.
When ALT levels in the same blood sample are normal, red blood cell destruction are common causes for the high AST readings. Muscle damage due to severe exertion or trauma and congestive heart failure can also be responsible for elevated AST reading in dogs and cats.
AST levels go up occasionally as the result of local reaction to vaccinations and intramuscular injections of all kinds.
AST levels are often increased during heartworm treatment with Immiticide® or Diroban® (melarsomine dihydrochloride).
Hemolyzed blood samples can also cause falsely high AST readings.
Health Problems That Can Cause AST Levels To Be Low: