GGT — Liver + Alcohol Marker — 60-Second Protocol
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lab guide · 2026-10-12
GGT is a liver enzyme, and drinking alcohol raises it.
Gamma-glutamyl transferase is an enzyme found mainly in the liver. High levels may signal a problem with the liver or bile ducts, and drinking alcohol raises GGT. The test cannot say what the cause is, so it is read alongside other liver tests.
The protocol
| Units | U/L |
| Standard range | 5–40 U/L (adults; ranges vary by lab) |
| above lab range | may signal a liver or bile-duct problem; alcohol and some medicines raise GGT — the test cannot name the cause, so review it with your clinician |
| within lab range | no GGT elevation — read together with the rest of your liver panel |
| high GGT + high ALP | more likely a liver disorder than a bone disorder |
| normal GGT + high ALP | more likely a bone disorder |
| Alcohol | drinking alcohol raises GGT — tell your clinician how much you drink and ask whether a repeat test makes sense |
| Clinician | ask about further evaluation if GGT stays above your lab's range |
| Medication | some medicines (for example phenytoin and phenobarbital) raise GGT — bring your medicine list |
Full transcript
GGT is a liver enzyme, and drinking alcohol raises it. The adult range is about five to forty units per litre. Above it may signal a liver or bile-duct problem — but some medicines raise it too, and the test cannot name the cause. So it is read with your liver panel: tell your clinician how much you drink. agegen.ai. Generate your prime age! ~~ Mr. Age
Sources
- https://medlineplus.gov/lab-tests/gamma-glutamyl-transferase-ggt-test/
- https://www.medlineplus.gov/ency/article/003458.htm
- https://medlineplus.gov/lab-tests/liver-function-tests/
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