Gamma‑GT; liver and bile ducts.
Blood collection at collection point
After your order you receive instructions by email
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Blood collection at 1,000+ locations across the Netherlands
Gamma-GT (Gamma-Glutamyltransferase) is an enzyme primarily present in the liver. It plays a role in the metabolism of amino acids, the building blocks of proteins.
Testing Gamma-GT can be useful for assessing liver health and for detecting liver diseases, such as hepatitis or cirrhosis. It can also assist in detecting alcohol misuse or exposure to hepatotoxic medications or substances.
A Gamma-GT test is used to check for signs of liver damage or disease. It helps identify blockages in the bile ducts and can be used as part of the evaluation of certain liver diseases.
A high level of Gamma-GT in the blood may indicate liver damage or disease. It can also be associated with excessive alcohol consumption, the use of certain medications, or exposure to hepatotoxic substances.
Low levels of Gamma-GT are generally not cause for concern and are rarely considered clinically significant. However, extremely low levels may, in rare cases, indicate reduced liver function.
This test is included in Dutch healthcare guidelines and is regularly used for its respective indications.
Rationale for this test
Gamma-GT is een standaard-bepaling in Nederlandse zorgrichtlijnen voor het beoordelen van leverfunctie en galwegproblematiek. De test wordt gebruikt bij diagnostiek van leverziekten, galwegobstructies en bij het opsporen van alcoholgerelateerde leverschade. De klinische betekenis en interpretatie zijn goed onderbouwd binnen de reguliere geneeskunde.
Dutch clinical guidelines and healthcare organisations
We recommend consulting these independent sources before ordering a preventive health check.
Brochure on preventive health checks: careful choice, reliability, pros and cons, checklist.
Independent information about preventive health checks from the National Institute for Public Health and the Environment.
Reliable patient information about illnesses and complaints from Dutch GPs (NHG).
Public-facing website of the Dutch Society for Clinical Chemistry with explanations of blood tests and laboratory values.
Answers to what people usually want to know.
After ordering we generate a referral letter and email you the instructions. You pick a collection point yourself and book an appointment there. Blood is drawn at the location, processed at the lab, and your result arrives digitally.
Often within a few working days. How soon you can be seen depends on how busy the location is and the type of analysis. For specialist analyses we first ship collection materials, which takes a bit longer.
At most collection points yes. Some accept walk-ins. This is clearly indicated per location. You choose the location that works best for you.
That depends on the test. Whether fasting is required, and from what time, is clearly stated in the instructions you receive after ordering. No surprises at the counter.
It varies per analysis: from same-day to a few working days. Standard values often come back quickly; analyses that go to an external lab can take a bit longer. You get an email with a link to your digital result, including a short explanation per value.
We work with 1,000+ collection points across the Netherlands. After ordering you'll see which locations near you are available and you pick where you'd like to go.
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