Trypsin-Like Immunoreactivity (Feline)

Also known as:TLIfTLI

Reference Range

Critical Low

ug/L

Reference Range

12-82

ug/L

Optimal Range

14-75

ug/L

Critical High

>120

ug/L

Also reported in: ng/mL

TLI evaluates your cat's pancreatic enzyme production and digestive capability.

Low

Low TLI in cats indicates exocrine pancreatic insufficiency (EPI), though it is far rarer in cats than dogs.

What to do:

Your cat may need digestive enzyme supplementation with meals. A diet trial will help manage the condition.

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Feline TLI: 8 ug/L (Low)

Normal

TLI evaluates your cat's pancreatic enzyme production and digestive capability.

What to do:

No action needed.

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Feline TLI: 35 ug/L

High

High TLI can indicate pancreatitis, often linked to triaditis (concurrent IBD and cholangitis).

What to do:

Your vet will investigate the entire GI triad with ultrasound and potentially a fPL test.

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Feline TLI: 100 ug/L (High)

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