Clinical tests

The onset of the allergic reaction from the time of allergen contact with sensitized mast cells is rapid, taking place within minutes. Skin-prick testing, which is the classical test for allergy, can thus be performed as a rapid diagnostic procedure. Antigen is introduced into the skin, which is examined for the presence of a wheal some 15-20 min later; histamine is used as a positive control, saline as the negative. A positive skin test (wheal 3 mm in diameter larger than saline control) usually correlates with the laboratory test for allergen-specific IgE in blood, the radioallergosorbent test (RAST) and with provocation tests. However, the skin-prick test results must always be interpreted in the light of the patient's history, as IgE reactivity to allergen is not always associated with clinical symptoms. Conversely, a negative skin-prick test can exist where there is only local sensitization in the shock organ; such patients will only give positive results on provocation tests.

Allergic To Everything

Allergic To Everything

The human body And Todays chemical infested world. Here is a news flash You are not allergic to pollen, pet dander, or whatever it is that makes your body revolt Rather, your body just can not handle that one thing, what ever it is, anymore, due to the massive barrage of toxic chemicals you and everyone else are ingesting every single day.

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