In Vivo Diagnostic Testing
The skin prick test introduces a microscopic amount of allergen into the epidermis. A positive result is indicated by the formation of a 'wheal and flare' (a raised bump surrounded by redness), proving the presence of specific IgE antibodies attached to skin mast cells.
| Test Component | Purpose |
|---|
| Histamine Control | Proves the skin can react properly |
| Saline Control | Provides a baseline for non-reaction |
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