How reports print it
GGTГГТГГТПГамма-ГТГамма ГТGGTPGamma-GTГамма-глутамилтрансферазаГамма-глутамилтранспептидазаГамма-глютамилтранспептидазаГамма-глютаматтранспептидазаГамма-глютаматтрансферазаГаммаглутамилтрансферазаγ-ГТ
What it shows
An enzyme of the liver and bile ducts.
Units and conversion
Base unit: U/L.
- 1 µkat/L = 60 U/L · 1 U/L = 0.01667 µkat/L
Enzyme activity depends on the method and the measuring temperature, so it is not converted between methods. Converting 1 µkat/L = 60 U/L only changes the unit.
Typical ranges
Your laboratory’s range comes first — it is printed on the report next to the result. Below is one laboratory’s adult range with its method: a reference, not a rule.
| Who | Range, U/L |
|---|---|
| Men | 10–71 |
| Women | 6–42 |
Range source: Лаборатория Хеликс — Гамма-глютамилтранспептидаза (гамма-ГТ)
Why it can be higher
Common reasons discussed with a doctor. This is not a diagnosis.
- Alcohol
- Bile flow problems
- Fatty changes in the liver
- Some medicines, such as anticonvulsants
Why it can be lower
- A low GGT activity usually means nothing by itself
What to ask a doctor
- How does GGT fit with ALT and alkaline phosphatase?
- When to repeat it?
Whom to see
A GP or internist; then a gastroenterologist.