rJug r1 Walnut / memory protein (f441)1572
Jug r1 is a heat-stable protein from the 2S albumin family, which is the main allergenic component of walnut and pecan nuts. It is resistant to digestion and the acidic environment of the gastrointestinal tract, allowing it to penetrate the intestinal mucosa and trigger immune reactions. Sensitization to Jug r1 is associated with a high risk of systemic allergic reactions, including anaphylaxis. This protein is an important marker for diagnosing walnut allergy and assessing disease severity.
FEIA (Fluorescence Enzyme Immunoassay, ImmunoCAP) – quantitative determination of specific IgE antibodies.
- Diagnosis of allergic reactions to walnut.
- Assessment of sensitization level and risk of allergy development.
- Monitoring therapy effectiveness.
- Evaluation of sensitization level after allergen avoidance.
- Assessment of immune system status.
- Blood should be drawn in the morning on an empty stomach or 4 hours after eating.
- Drinking plain still water is allowed.
- Do not smoke for 30 minutes before the test.
- For children under 1 year – no food 30-40 minutes before the test; for children 1-5 years – 2-3 hours fasting.
Jug r1 is a key allergenic component of walnut, belonging to the 2S albumin family. It has high stability and the ability to cause severe allergic reactions, including anaphylaxis, angioedema, and urticaria. Determining specific IgE to this protein helps differentiate walnut allergy from other cross-reactions with peanuts and other nuts. The test is important for developing treatment and prevention strategies for allergic manifestations.