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How it is performed:
| • | detects serum IgE antibodies to specific allergens |
| • | the measurement of specific IgE in serum by its binding to a solid phase allergen and quantization by the subsequent uptake of radiolabelled anti-IgE |
| • | requires defined allergens and full standardization |
Relevance:
| • | like skin (prick) tests, a negative result is very reliable in ruling out an IgE-mediated reaction to a particular food, but a positive result has low specificity |
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