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GGT (gamma-glutamyl transferase) is a liver enzyme that detects bile duct and liver cell damage. Normal levels mean the liver is functioning well.
Low GGT is not typically a concern in horses.
No action needed.
Equine GGT: 8 U/L (Low)GGT (gamma-glutamyl transferase) is a liver enzyme that detects bile duct and liver cell damage. Normal levels mean the liver is functioning well.
No action needed.
Equine GGT: 25 U/LElevated GGT is a sensitive indicator of liver disease in horses, particularly cholestasis (reduced bile flow). Common causes include ragwort (pyrrolizidine alkaloid) toxicity, hyperlipemia in ponies and miniature horses, chronic active hepatitis, or cholangiohepatitis. GGT rises slower than SDH but stays elevated longer in chronic liver disease.
Your veterinarian will likely perform ultrasound and a liver biopsy to determine the underlying cause and severity.
Equine GGT: 85 U/L (High)Upload your lab report and get your actual values interpreted in plain English — instantly, with no medical training required.