SPT - Allergy Test

SPT (skin prick test) is a quick allergy test that introduces tiny amounts of common allergens into the skin, usually on the forearm or back, to detect immediate IgE‑mediated reactions. Reactions are read in about 15–20 minutes; a raised, red wheal indicates sensitization. It’s commonly used for pollen, dust mites, pets and foods, is low‑risk but can cause mild local reactions, and may require stopping antihistamines beforehand.

Yes. A skin prick test (SPT) detects immediate IgE‑mediated allergic sensitization. Small amounts of suspected allergens are placed on the skin and pricked; a wheal-and-flare within 15–20 minutes indicates sensitization. It’s commonly used for pollen, dust mites, pets, foods and insect venom. Results require clinical interpretation; antihistamines can invalidate testing and non‑IgE allergies won’t be detected.

A skin prick test (SPT) is generally not painful—it feels like small pinpricks or brief stinging. You may experience itching, redness and small raised bumps where allergens are applied; discomfort is mild and short-lived. Numbing is usually not needed. Serious reactions are rare but staff monitor you, so mention any severe allergies or medications beforehand.

SPT positive means a skin prick test produces an immediate wheal-and-flare reaction to a specific allergen, usually a wheal at least 3 mm larger than the negative control. It indicates sensitization (IgE antibodies) but does not always equal clinical allergy. Results must be interpreted with symptoms and history; further testing or supervised challenge may be needed to confirm true allergy and guide management.

SPT (skin prick test) is a quick diagnostic test for IgE‑mediated allergies. Small amounts of suspected allergens are placed on the forearm or back and the skin is lightly pricked; results appear as a wheal-and-flare reaction within 15–20 minutes. Positive and negative controls verify validity. It helps identify sensitisation to pollen, dust mites, pet dander, insects and foods, but clinical correlation is needed and antihistamines should be stopped beforehand.

Four common allergy tests are: skin prick testing, which places small allergen extracts on the skin to check immediate reactions; blood tests measuring specific IgE antibodies; patch testing for delayed contact allergies applied and read after 48–72 hours; and oral (provocation) challenge tests, supervised ingestion to confirm food or drug allergies.