Skin Tests:
A point of the antigen is placed on the skin on the front face of the forearm, then the skin is scratched or juggled to allow the sensor to enter and the process is repeated in the other forearm but using a control material. The diameter of the redness is measured after 15-30 minutes and compared with the witness.
Negative skin tests provide an excellent negative predictor of accuracy and suggest absence of intermediate interaction with IgE.
All foods that are positive in the skin prick test must be associated with a history of severe exposure (eg, anaphylaxis) or must be demonstrated to be caused by the allergic reaction through food-testing tests before being considered sensitizing.
A point of the antigen is placed on the skin on the front face of the forearm, then the skin is scratched or juggled to allow the sensor to enter and the process is repeated in the other forearm but using a control material. The diameter of the redness is measured after 15-30 minutes and compared with the witness.
Negative skin tests provide an excellent negative predictor of accuracy and suggest absence of intermediate interaction with IgE.
All foods that are positive in the skin prick test must be associated with a history of severe exposure (eg, anaphylaxis) or must be demonstrated to be caused by the allergic reaction through food-testing tests before being considered sensitizing.
