ALAT – what do your numbers mean?
Have you had your ALAT level measured and are unsure what the numbers mean? Here's a clear explanation of the normal range, what a high or low level can mean, and when it makes sense to get tested.
What is the normal range for ALAT?
What is the normal range for ALAT?
The normal range for ALAT (Alanine aminotransferase) varies depending on age and gender. For adult men, it typically ranges from 10-70 U/L, while for women it is 10-45 U/L. For children and adolescents from 1 month to 16 years, the reference interval is 5-45 U/L. In infants under 1 month, values below 40 U/L are normal. Pregnancy can also affect ALAT levels, with values varying from below 30 U/L in the first trimester to up to 58 U/L shortly after birth. Laboratories may have slight variations in their reference intervals, and it is important to evaluate results in a clinical context. Values close to the boundary areas may indicate mild liver impairment but often require further investigation to determine the cause.
What does a low level mean?
A low level of ALAT is rarely clinically significant and is not usually considered a problem. However, in rare cases, it may be associated with a deficiency of vitamin B6, as this vitamin is necessary for the enzyme's function. Individuals with very low values may experience fatigue or muscle weakness if it is due to underlying nutritional deficiencies. Particularly vulnerable groups include the elderly, people with chronic diseases, or those with an inadequate diet. If a low ALAT level is detected, the patient's general health should be assessed, and a blood test for vitamin B6 levels should be considered. Treatment often involves supplements or dietary changes.
What does a high level mean?
An elevated ALAT level can indicate liver damage or disease. Common causes include hepatitis, alcoholic liver disease, fatty liver (NAFLD), drug poisoning, or infections such as mononucleosis. Symptoms may include fatigue, jaundice, abdominal pain, or nausea. Moderately elevated values can also be seen with metabolic syndrome or after intense physical activity. If the level is very high (more than 10 times the normal range), it may be due to acute liver injury, such as in hepatitis or paracetamol poisoning. It is important to seek medical attention for persistent or very high values, as early diagnosis and treatment can prevent further liver damage. The doctor will typically recommend further tests to identify the cause and assess liver function.
Get your ALAT level tested
At Celto, you can order a blood test for ALAT directly online – without a referral from your doctor and without long waiting times. We have over 34 sample 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 have 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 location. 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 sample 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 sample 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 exactly the same quality and the 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.