The RAST test or EAST test are different names for the same test. They are blood tests.
This test measures the level of “specific” IgE to various allergens. They give the same results as the skin tests. To order the test you need to specify what allergens to test for - for example, egg white, cow’s milk, cat fur, rye grass pollen …
are useful to pick up QUICK onset allergy reactions (that is IgE immediate sensitivity)
will be negative to gluten in gluten-sensitivity
are blood tests
are positive in anaphylaxis peoplegive the same information as skin prick tests.
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