Allergy Test Duration
An allergy test typically takes between 30 minutes to an hour to complete. It can vary depending on the type of test being done. Depending on the severity of the allergies, a doctor may need to perform additional tests to identify the specific allergen.
The most common type of allergy test is a skin prick test, also called a scratch or puncture test. This type of test involves pricking the skin with a tiny sample of the allergen to see if a reaction occurs. The results of the test will be visible within 15 minutes.
Blood Tests
Blood tests, also known as Radioallergosorbent tests (RAST), are used to measure the level of immunoglobulin E (IgE) antibodies in the blood. These antibodies are produced in response to allergens. The results of the test can take a few days to a few weeks to come back.
Intradermal Testing
Intradermal testing, also called a skin injection test, involves injecting a small amount of the allergen just below the skin's surface. The results of the test can be seen within 20 minutes.
Conclusion
The duration of an allergy test depends on the type of test being performed and the severity of the allergies. Skin prick tests typically take 15 minutes, while blood tests take a few days to a few weeks to get the results. Intradermal testing takes about 20 minutes. It is important to follow the doctor's instructions carefully when undergoing an allergy test.