TRAb – what do your numbers mean?
Have you had your TRAb level measured and are you unsure what the numbers mean? Here's a clear explanation of the normal range, what too high or too low a level can mean, and when it makes sense to get tested.
What is the normal range for TRAb?
What is the normal range for TRAb?
The normal range for TRAb (TSH-receptor antibody) varies depending on the method used, but generally the following reference intervals apply: TRAb levels below 1.0 IU/L are considered negative, levels between 1.0 and 1.5 IU/L are in the grey area, and levels above 1.5 IU/L are considered positive. These values are method-dependent, and there may be minor variations between laboratories. It is important to note that TRAb levels can be influenced by factors such as age, gender, and pregnancy. For example, pregnant women with past or current hyperthyroidism may require closer monitoring. Levels close to the threshold can indicate a possible risk of developing or relapsing Graves' disease, and further investigations may be necessary.
What does a low level mean?
A low level of TRAb, typically below 1.0 IU/L, usually indicates the absence of autoimmune activity directed against the TSH receptor. This is a good sign and means there is no active Graves' disease or related autoimmune conditions. Symptoms of low TRAb levels are rare, as it is generally not associated with disease. However, low TRAb may occur in patients who have previously had Graves' disease and are now in remission. For these patients, the low level may indicate successful treatment. There are no specific risk groups associated with low TRAb levels, but it is always important to consult a doctor for a correct assessment, especially if there are other symptoms of thyroid dysfunction.
What does a high level mean?
A high level of TRAb, above 1.5 IU/L, is often associated with Graves' disease, an autoimmune disorder that causes hyperthyroidism. Symptoms can include weight loss, palpitations, nervousness, and increased sweating. In pregnant women, high TRAb levels can lead to a risk of neonatal hyperthyroidism. Causes of elevated TRAb levels include active Graves' disease, relapse after treatment, or rarer conditions such as toxic multinodular goiter. Individuals with high TRAb levels should seek medical attention to initiate treatment and avoid complications such as thyroid storm. It is recommended to consult an endocrinologist for a detailed assessment and treatment plan.
Get your TRAb level tested
At Celto, you can order a blood test for TRAb directly online – without a referral from your doctor and without long waiting times. We have over 34 blood sampling locations 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 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 authorised healthcare personnel and typically only takes a few minutes.
Where you can get tested
Celto has over 34 blood sampling locations at public hospitals and clinics throughout 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 blood sampling location →
How to get your results
Your blood samples are analysed in the same laboratories used by your own doctor and the rest of the healthcare system, precisely 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.