16/02/2026
Most liver blood work gets reduced to just two letters: ALT and AST. But there's another enzyme on that panel that most doctors don't talk about—and it might actually be the most interesting one.
It's called GGT. Gamma-glutamyl transferase.
While other enzymes tell you about liver injury, GGT tells a different story. It's connected to your bile ducts, your antioxidant levels, and surprisingly—your risk for things that have nothing to do with your liver at all.
Here are five things your GGT level reveals about your health that your doctor might not have explained.
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