Non-invasive diagnostic test for cow's milk allergy: A cross-sectional, descriptive study.

Background: Cow's milk allergy is a common type of allergy in infants that is caused by the immune response to proteins in cow's milk. Digestive manifestations, atopic dermatitis, and respiratory discomfort are some of the clinical manifestations that appear; however, none of them are objective criteria to confirm the diagnosis, which may result in misdiagnosis, treatment hindrance, and parental concerns. Therefore, new methodologies for an accurate and immediate diagnosis is essential.