There is no one-size-fits-all age when it comes to allergy testing, as people develop allergies at different points in their lives. Allergies can present during childhood or adulthood, and symptoms can fluctuate in terms of severity. Whenever you start noticing symptoms that are in line with allergies, then it’s time to book an appointment with an allergy physician so that you can get tested.   It’s important to note that skin tests aren’t typically done in children under the age of 6 months and that these tests are generally less accurate in children under the age of 2 years.