IgG Food Testing

IgG (or IgG4) food panels are sold directly to parents as ‘intolerance’ tests. IgG to foods reflects normal exposure, not allergy. The AAAAI Choosing Wisely list (2012) states that specific IgG testing is not a test for an allergic condition, and NICE CG57 advises parents of children with eczema not to use high-street or internet allergy tests. Acting on these results can lead to unnecessary Elimination Diets.

Connections

• Skin Prick Testing — invalid alternative to IgE testing, source: AAAAI 2012; NICE CG57