The RAST (Radioallergosorbent test) is a laboratory test performed on blood. It tests for the amount of specific IgE antibodies in the blood which are present if there is a "true" allergic reaction.
Review Date: 05/25/2009
Reviewed By: Stuart I. Henochowicz, MD, FACP, Associate Clinical Professor of
Medicine, Division of Allergy, Immunology, and Rheumatology,
Georgetown University Medical School. Also reviewed by David Zieve,
MD, MHA, Medical Director, A.D.A.M., Inc.
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