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Skin Patch Test

skin patch test

What is the Skin Patch Test (Eczema Test)?

The skin patch test, also known as the eczema test, is the basic test used in the diagnosis of allergic contact dermatitis (AKD). It allows to distinguish which of the substances that come into contact with the skin is allergic. It gives very valuable results when evaluated by considering the patient’s history and physical examination findings.

Contact dermatitis is inflammation of the skin caused by an external agent that comes into contact with the skin. Generally, one or more of the skin lesions such as itching, redness, scaling, crusting, skin cracks, water-filled blisters may be present together.

Contact dermatitis is classified into two groups according to its cause; It is irritant contact dermatitis, which occurs when the causative substance irritates the skin, and allergic contact dermatitis, which is caused by the body’s immune response to the allergen that comes into contact. 

Who can have a skin patch test?

This test can be applied if allergies are suspected in people who frequently develop eczema on their skin.

How is it applied?

In this test, boxes containing allergens are attached to the back with tape and kept on the back for two days. In this way, the skin patch test is performed. After two days, the bands are removed, the test is evaluated on the 2nd and 3rd days, and if there is an allergen that can be found, the patient is recommended to avoid this substance.

patch test; It is a ready-to-use test material in petroleum jelly or liquid carriers or in the form of ready-to-use tapes containing various allergens (T.R.U.E. test: “Thin layer rapid use epicutaneous test”). This practical and ready-to-use test material is often used. If deemed necessary, personal care products, cosmetics or other products brought by the patient and suspected of causing ACD may also be added to the test.

The test material can also be applied to the back or upper outer arms. If ready-to-use tapes (such as “T.R.U.E. test”) are to be applied, the test material is adhered directly to the skin. After 48 hours, the test material is removed, the test area is marked with a pencil and evaluated after 30 minutes. The test site is reassessed at 72 or 96 hours. Second and third evaluations should be made at 72 or 96 hours in order to detect late reactions. If there is an allergen or irritant substance detected as a result of the evaluation, the patient is informed and informed to prevent contact with those substances.

What should be considered before and during the skin patch test?

One week before the test, topical corticosteroids applied to the back should be discontinued, and care should be taken that the patient is not using systemic corticosteroids or immunosuppressants. The back area should not be washed during the test period. Excessive sweating and friction should be avoided.

What is the Skin Patch Test (Eczema Test) Price?

It is not legal for centers approved by the Ministry of Health to indicate prices on their websites. For this reason, you can get information about the prices of “Skin Patch Test (Eczema Test)” by calling our clinic on 0(212) 225 08 00. 


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