Table 2.

Tests identifying a food allergen and establishing the diagnosis of IgE-mediated food allergy [23]

Test	Can it identify a food allergen?	Can it diagnose food allergy?
Skin prick/puncture test	Yes	No
Intradermal testing	Yes (but test poses a risk of adverse reactions)	No
Total serum IgE	No	No
Allergen-specific IgE in the serum	Yes	No
Atopy patch test	No	No
Combination of skin prick/puncture test, sIgE test, and atopy patch test	Yes	Probably
Food elimination diet	Yes	Probably
Oral food challenge	Yes (but the test poses a risk of adverse reactions)	Yes