Anti-TPO Antibody – What Do Your Levels Mean?
Have you had your Anti-TPO antibody 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 Anti-TPO antibodies?
What is the normal range for Anti-TPO antibodies?
The normal range for Anti-TPO antibodies varies depending on the laboratory's method, but generally, values below 25 x 10³ int.units/L are considered normal for individuals aged 1-18 years. For adults over 18 years, values below 40 x 10³ int.units/L are typically normal. There may be slight variations depending on the laboratory's techniques and reference intervals. It is important to note that values close to the cut-off limits can indicate an incipient autoimmune process, even if they are still within the normal range. The doctor will often assess the results in conjunction with symptoms and other blood tests.
What does a low level mean?
A low level of Anti-TPO antibodies, i.e., values within or close to the normal reference interval, typically indicates no signs of an autoimmune process in the thyroid gland. This is normal and associated with healthy thyroid function. Symptoms of low levels of Anti-TPO antibodies are rare, as it is not a pathological condition. There are also no specific risk groups associated with low values. If thyroid disease is suspected, the doctor will likely investigate other markers such as TSH and free T4 for a more complete assessment.
What does a high level mean?
A high level of Anti-TPO antibodies, above the reference interval, is often an indicator of autoimmune thyroiditis, such as Hashimoto's disease. This can lead to hypothyroidism, where the thyroid gland produces too little hormone. Symptoms may include fatigue, weight gain, feeling cold, and hair loss. High levels can also be seen in other autoimmune diseases like Graves' disease. It is recommended to consult a doctor if the level is elevated, especially if there are symptoms of thyroid dysfunction. The doctor may suggest further tests and possibly initiate treatment to regulate thyroid function.
Get your Anti-TPO antibody level tested
At Celto, you can order an Anti-TPO antibody blood test directly online – without a referral from your doctor and without long waiting times. We have over 34 blood sample collection points 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 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 professionals and typically only takes a few minutes.
Where you can get tested
Celto has over 34 blood sample collection points at public hospitals and clinics around 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 sample collection point →
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 working days, and Celto will also send an easy-to-understand overview of your values so you know what the numbers mean.