Lab value · ALT
ALT in cats, explained
ALT is a liver enzyme.
What a higher alt can mean
A higher ALT can reflect liver stress, hyperthyroidism, or other conditions.
What a lower alt can mean
Low ALT is not usually a concern.
Questions to ask your vet
Ask your vet
- Should we look into my cat’s liver values?
Decode your cat’s ALT
Enter your cat’s values and get a plain-English summary, IRIS reference bars and questions for your vet.
Frequently asked questions
What is ALT in a cat blood test?
ALT is a liver enzyme.
What does a high alt mean in cats?
A higher ALT can reflect liver stress, hyperthyroidism, or other conditions.
What does a low alt mean in cats?
Low ALT is not usually a concern.
What is a normal alt level for a cat?
A typical feline reference interval is about Example only: 12 – 130 U/L. Use the range printed on your cat’s report — it differs between labs., but every lab sets its own range. The range printed on your cat’s report is the one to use.
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