Blood tests for food allergies in children may not be as reliable as you think.
According to a study published in the Journal of Pediatrics 84 – 93% of foods that had been avoided due to blood test results could be reintroduced after passing “food challenges.” Source: https://www.foodnavigator-usa.com/
This is not to say that we should ignore the ways that food allergies and sensitivities can impact health. Diseases and conditions people suffer from can actually result from hidden allergies and sensitivities, including everything from rheumatoid arthritis to depression.