ASAT – what do your numbers mean?
Have you had your ASAT 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 indicate, and when it makes sense to get tested.
What is the normal range for ASAT?
What is the normal range for ASAT?
The normal range for ASAT (aspartate aminotransferase) varies depending on age, gender, and physiological conditions. For newborns (0 days to 1 month), the reference interval is 20-100 U/L, while for infants (1 month to 1 year), it is 15-65 U/L. For children between 1 and 12 years, the normal range is 10-60 U/L. For women over 18 years, the interval is 15-35 U/L, and for men over 18 years, it is 15-45 U/L. In pregnant women, values may be 10-15% higher in the third trimester and can reach up to 110 U/L during childbirth. Variations can also occur between laboratories depending on measurement methods. Being close to the limit values can indicate incipient tissue damage or physiological changes that should be assessed in a clinical context.
What does a low level mean?
A low level of ASAT is rarely clinically significant, but can occur with vitamin B6 deficiency, as the enzyme depends on this vitamin for its function. Symptoms may include fatigue, muscle weakness, and neurological disturbances. Groups at risk for low ASAT include individuals with poor nutrition, chronic diseases, or alcohol abuse. If ASAT is low, it is recommended to investigate for underlying causes such as vitamin deficiency or liver dysfunction. Treatment will typically focus on correcting the identified cause, e.g., by supplementing with vitamin B6.
What does a high level mean?
An elevated ASAT level can indicate tissue damage, especially in the liver, muscles, or heart. Common causes include liver conditions such as hepatitis, alcoholic liver disease, or muscle injuries. Symptoms may include fatigue, jaundice, abdominal pain, or dark urine. With significantly elevated values, a doctor should be consulted for further investigation, which may include imaging and other blood tests. Treatment depends on the underlying cause but may include lifestyle changes, medical treatment, or in severe cases, hospitalisation. Early intervention can prevent further tissue damage.
Get your ASAT level tested
At Celto, you can order an ASAT blood test 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 analysed in 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 the time and place. The blood sample itself is taken by authorised 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 across Denmark. You choose the location that suits you best among our partners, and there are typically available times within a few days. Find your nearest sample collection site →
How you get your results
Your blood samples are analysed in the same laboratories used by your own doctor and the rest of the healthcare system, with the exact same quality and the same tests. You will receive your results directly on sundhed.dk within a few working days, and Celto will also send an easy-to-understand breakdown of your values so you know what the numbers mean.