GGT – what do your numbers mean?
Have you had your GGT level measured and are unsure what the numbers mean? Here's a clear explanation of the normal range, what a high or low level might indicate, and when it makes sense to get tested.
What is the normal range for GGT?
What is the normal range for GGT?
The normal range for Gamma-Glutamyltransferase (GGT) varies depending on age, sex, and laboratory methods. For men under 40, the normal range is typically between 10-80 U/L, while for men over 40 it is 15-115 U/L. For women under 40, the interval is 10-45 U/L, and for women over 40 it is 10-75 U/L. For children under 6 months, the normal range is 10-130 U/L, and for children between 6 months and 18 years it is 10-45 U/L. These values may vary slightly between laboratories. Being close to the limit values can indicate incipient liver or bile duct diseases, and further investigations may be necessary.
What does a low level mean?
A low GGT level generally has no clinical significance and rarely requires further investigation. GGT levels below the normal range are rarely seen and are not associated with specific symptoms or diseases. There are no known serious conditions caused by low GGT levels, and it is often considered normal. If there are still concerns, one should consult a doctor to rule out any underlying conditions.
What does a high level mean?
An elevated GGT level can indicate liver or bile duct diseases, such as cholestasis, liver damage, or alcohol abuse. Moderately elevated values (100-400 U/L) can also be seen in infectious hepatitis, fatty liver, and toxic exposures such as alcohol or medication. Very high values (over 400 U/L) can be a sign of serious conditions such as cholestasis or liver cirrhosis. Symptoms may include fatigue, jaundice, or abdominal pain. In case of elevated values, it is recommended to seek medical advice for further diagnosis and treatment.
Get your GGT level tested
At Celto, you can order a blood test for GGT directly online – without a doctor's referral and without long waiting times. We have over 34 blood collection sites at public hospitals throughout Denmark, and your samples are analyzed at the same accredited laboratories used by the rest of the healthcare system. You will receive your results directly on sundhed.dk, just like all other blood tests from the public system.
How it works
When you order a blood test from Celto, you choose which markers you want to be tested – no doctor's referral necessary. After your purchase, you will receive an email with a link to our booking system, where you choose a time and place. The blood sample itself is taken by authorized healthcare personnel and typically only takes a few minutes.
Where you can get tested
Celto has over 34 blood collection sites at public hospitals and clinics throughout Denmark. You choose the location that suits you best among our partners, and there are typically available appointments within a few days. Find your nearest blood collection site →
How to get your results
Your blood samples are analyzed at the same laboratories used by your own doctor and the rest of the healthcare system, with the exact same quality and same tests. You will receive your results directly on sundhed.dk within a few business days, and Celto will also send an easy-to-understand review of your values so you know what the numbers mean.