Gamma-Glutamyl Transferase— Normal Range & What Your Result Means

Normal Gamma-Glutamyl Transferase range (GGT, U/L)

  • Adults9–48 U/L

Ranges are typical adult values and vary between labs. Use the range on your own report.

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What is Gamma-Glutamyl Transferase (GGT)?

Gamma-Glutamyl Transferase is measured as part of a liver function panel. Your GGT is normal — a reassuring sign for your liver and bile ducts.

What does a high Gamma-Glutamyl Transferase mean?

Your GGT is elevated. GGT rises with alcohol use, fatty liver, bile-duct issues, and some medications. A raised GGT alongside a raised ALP usually points to the bile system.

If markedly elevated: Your GGT is very high, which warrants prompt evaluation of your liver and bile ducts.

Understand your whole report, not just one number

A single value rarely tells the full story — Gamma-Glutamyl Transferase is best read alongside the rest of your panel. Paste your values or upload your report and get a plain-English explanation of every marker, with the important results flagged.

Gamma-Glutamyl Transferase: frequently asked questions

What is a normal Gamma-Glutamyl Transferase level?

A normal Gamma-Glutamyl Transferase (GGT) level is 9–48 U/L for adults. Reference ranges vary slightly between laboratories, so always compare against the range printed on your own report.

What does a high Gamma-Glutamyl Transferase mean?

Your GGT is elevated. GGT rises with alcohol use, fatty liver, bile-duct issues, and some medications. A raised GGT alongside a raised ALP usually points to the bile system.

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