Does an allergy test hurt?

The prick test is almost painless — the skin is only superficially scratched, which feels like a fine tingling. If there is a positive reaction, the wheals itch for a while; that is part of the test.

Do I have to stop taking my allergy medication beforehand?

Antihistamines suppress the skin reaction and usually need to be paused for several days before the test. Be sure to clarify this with the practice in advance and never stop taking medication on your own — especially not asthma or cortisone preparations.

How reliable are allergy tests?

Skin and blood tests reliably show whether sensitization exists. Whether this actually causes your symptoms only emerges from the overall picture with your medical history — that is why medical interpretation is so important.

Can a dangerous reaction occur during the test?

This is rare but possible — especially with tests for food or insect venom. That is precisely why the tests are performed at the practice under supervision, where immediate treatment can be provided in an emergency.

What happens after a positive test?

The doctor will discuss the consequences with you: avoiding triggers, relieving symptoms with medication, or — for example with pollen or insect venom allergies — considering desensitization, which addresses the allergy at its root.

Allergy Test — Procedure, Preparation & Cost

An allergy test shows what your immune system reacts to hypersensitively — for example, pollen, house dust mites, animal hair, foods, or insect venom. Skin tests and blood tests are most commonly used, often in combination. The result helps you address symptoms in a targeted way and avoid triggers.

Typical Areas of Use

Hay fever and year-round allergic rhinitis
Urticaria and unexplained skin rashes
Suspected food allergy
Investigation of allergic asthma
Reactions to insect stings
Eczema with suspected contact allergy

How It Works

1First, the doctor will discuss your symptoms in detail: When do they occur, in what environment, after which foods? This medical history is half the diagnosis.
2In the most common skin test, the prick test, drops of various allergen solutions are placed on your forearm and the skin underneath is superficially scratched — barely noticeable.
3After 15 to 20 minutes, the results are read: Small, itchy wheals indicate sensitization to the respective allergen.
4Complementary or as an alternative, a blood sample can detect specific antibodies against individual allergens; if contact allergy is suspected, patch tests on the back are used.
5The doctor interprets the results together with your symptoms and discusses with you what follows — from avoidance recommendations to treatment options.

How to Prepare

Antihistamines can distort skin tests and usually need to be paused for several days beforehand — only do this after consulting with your doctor.
Note in advance when and in which situations your symptoms occur; this makes it easier to select the test allergens.
Wear clothing that allows you to easily expose your forearms.

Side Effects & Risks

The wheals at the test sites itch temporarily — this is intended and subsides within hours.
Stronger allergic reactions occur rarely; that is why the tests are performed under medical supervision, where immediate action can be taken.
A positive test result alone is not yet a diagnosis: It shows sensitization, which only becomes meaningful together with actual symptoms.

Afterwards — and When to Seek Help

The itching at the test sites usually subsides within hours; cooling helps. After that, there are no restrictions. Contact us immediately — while still at the practice or via emergency number 144 — if you experience shortness of breath, facial swelling, circulatory problems, or a widespread rash after the test; such reactions are rare and usually appear within the first hour. Arrange a follow-up discussion of the results so that the test leads to concrete consequences for your daily life.

Cost & Insurance

Allergy tests carried out by a doctor for a medical reason are generally covered by the basic insurance; the franchise and the co-payment apply as usual. This applies to both skin and blood tests. If in doubt, please ask your health insurance provider; this information serves as guidance only, without guarantee.

Frequently Asked Questions

Does an allergy test hurt?: The prick test is almost painless — the skin is only superficially scratched, which feels like a fine tingling. If there is a positive reaction, the wheals itch for a while; that is part of the test.
Do I have to stop taking my allergy medication beforehand?: Antihistamines suppress the skin reaction and usually need to be paused for several days before the test. Be sure to clarify this with the practice in advance and never stop taking medication on your own — especially not asthma or cortisone preparations.
How reliable are allergy tests?: Skin and blood tests reliably show whether sensitization exists. Whether this actually causes your symptoms only emerges from the overall picture with your medical history — that is why medical interpretation is so important.
Can a dangerous reaction occur during the test?: This is rare but possible — especially with tests for food or insect venom. That is precisely why the tests are performed at the practice under supervision, where immediate treatment can be provided in an emergency.
What happens after a positive test?: The doctor will discuss the consequences with you: avoiding triggers, relieving symptoms with medication, or — for example with pollen or insect venom allergies — considering desensitization, which addresses the allergy at its root.