IgE – what do your numbers mean?
Have you had your IgE 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 IgE?
What is the normal range for IgE?
The normal range for total IgE in the blood varies depending on age. For infants (0-12 months) it is less than 15 x10³ IU/L, for children aged 1-6 years it is less than 100 x10³ IU/L, for children aged 6-10 years it is less than 150 x10³ IU/L, and for individuals over 10 years it is less than 115 x10³ IU/L. These values may vary slightly depending on the laboratory equipment and analysis methods used. Being close to the limit can indicate a possible allergic reaction or other immunological activity, and further investigations may be necessary to clarify the cause.
What does a low level mean?
A low level of IgE is rarely clinically significant, as IgE is generally found in very low concentrations in the blood. However, it can be associated with certain immune deficiencies or genetic conditions, such as selective IgE deficiency. Symptoms are often absent, but some individuals may experience increased susceptibility to infections or a reduced ability to develop allergic reactions. Particularly vulnerable groups include people with hereditary immune deficiencies. If a low level is detected, it should be assessed in conjunction with the patient's clinical history and other immunological markers. A doctor may recommend further tests to rule out underlying conditions.
What does a high level mean?
An elevated level of IgE can indicate allergic reactions, such as hay fever, asthma, or food allergies. It can also be a sign of parasitic infections or rarer conditions like hyper-IgE syndrome. Symptoms may include itching, rashes, swelling, breathing difficulties, or gastrointestinal problems depending on the underlying cause. If the level is very high, you should seek medical attention for further evaluation. Treatment depends on the cause and may include allergy treatment, antiparasitic agents, or immunosuppressive therapy. It is important to consult a specialist for correct diagnosis and treatment.
Get your IgE level tested
At Celto, you can order an IgE 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 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 the time and place. The blood test 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 throughout Denmark. You choose the location that suits you best from 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 at the same laboratories used by your own doctor and the rest of the healthcare system, exactly the same quality and the same samples. You will receive your results directly on sundhed.dk within a few business days, and Celto will also send an easy-to-understand overview of your values so you know what the numbers mean.