Table 14. Overview of the suitability of prick test materials [271]^c.

	Commercial extract	Suitable for native test a	Limited suitability for native test b
Food of animal origin
Fish	+	+
Meat	(+)	+
Chicken egg	+	+
Seafood and snails	+	+
Milk	+	+
Food of vegetable origin
Pineapple			+
Apple		+
Cereals	(+)	+
Strawberries			+
Peanuts	+	+
Spices			+
Hazelnuts	+	+
Carrot		+
Kiwi			+
Lychee		+
Mango		+
Oilseeds (e.g., poppy, sesame)		+
Peach		+
Celery	(+)	+
Mustard			+
Soy	(+)	+
Tomato			+
Grape		+
Sugar snap pea		+

^aIdeally control subjects should be tested because of possible irritant components (testing of control subjects with not approved test preparations is not legal in Germany according to AMG). ^bHigher irritant potential. ^cData on the quality of commercial extracts are only available for individual food prick test solutions from individual manufacturers [271], therefore this table can only provide limited information. It does not allow extrapolation to the performance of test allergens of the same allergen sources from other manufacturers.