From: Critically appraised topic on adverse food reactions of companion animals (4): can we diagnose adverse food reactions in dogs and cats with in vivo or in vitro tests?
Accuracy
Positive predictability
Negative predictability
Intradermal testing with food antigens [4, 14]
63–76%
60–67%
62–77%
Serum testing for food-specific IgE [4, 5, 14]
58–87%
15–100%
61–86%
Serum testing for food-specific IgG [5]
77%
35%
84%
Lymphocyte proliferation tests [14]
94%
100%
93%
Patch testing with food antigens [5, 25]
81–90%
63–75%
88–99%