Abstract
Cow's milk (CM) allergy is the most common food allergy in young children and affects 2% to 3% of infants.1 Most patients with CM allergy are cosensitized to casein and whey (α-lactalbumin, β-lactoglobulin) proteins.1 For formula-fed infants with CM allergy, extensively hydrolyzed, amino acid–based, or soy formulas are typically recommended.2 Here we report a case in which assessment for allergy to specific CM proteins allowed for formula choice beyond the typical recommendations.
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