Allergen, Individual-Food Onion Piaz (Allium Cepa) F48

The Allergen, Individual‑Food Onion Piaz (Allium cepa) F48 test is a laboratory assay that detects specific IgE antibodies against onion (Allium cepa) to identify sensitisation to this food allergen. The test is performed on a small blood sample collected at home or at a clinic and analysed using a validated immunoassay to give a quantitative IgE result and an allergy class (where applicable). Identifying sensitisation helps distinguish immune‑mediated onion allergy from other causes of gastrointestinal or cutaneous symptoms.

This test is most useful for individuals in Dubai and across the UAE who experience immediate symptoms (such as hives, swelling, oral itching, throat tightness, or gastrointestinal upset) after eating onion or foods containing onion, or for those with suspected cross‑reactivity to other Allium species. Results support safe dietary choices, guided elimination diets, and clinical decision‑making by allergists or general practitioners; a positive result indicates sensitisation but should be interpreted together with clinical history and, where needed, supervised challenge testing.

Sample collection is suitable for at‑home phlebotomy or clinic pickup across Dubai/UAE; no prolonged fasting is required and common antihistamines do not typically alter IgE measurements. Results are reported quantitatively (with interpretive guidance) and can be reviewed with a healthcare professional — Touch Connect can arrange sample collection and follow‑up consultation in AED‑based pricing plans. Note the test detects IgE sensitisation and not necessarily clinical reactivity in every case; consult a licensed allergist for diagnosis, treatment planning, or emergency action advice.

• Onion (Allium cepa) specific IgE
• IgE concentration (kU/L)
• Allergy class / sensitisation grade (e.g., Class 0–6)

• Immediate allergic reactions after eating onion (hives, swelling, throat tightness)
• Oral allergy syndrome with mouth or throat itching on onion exposure
• Unexplained gastrointestinal symptoms after meals containing onion
• Before starting elimination diets to confirm suspected onion sensitisation
• Assessment of cross‑reactivity with other Allium family foods (e.g., garlic)

• Accurate identification of onion (Allium cepa) sensitisation
• At‑home sample collection and UAE‑wide pickup options
• Quantitative results to guide clinician management and dietary plans
• Reduces risk of accidental exposure by enabling targeted avoidance
• Facilitates follow‑up with allergists or dietitians in Dubai/AED‑based care

• Small blood sample (venous or capillary) collected at home or clinic
• No fasting required prior to sample collection
• Continue regular medications unless advised otherwise by your clinician
• Provide a clear clinical history of reactions and current medications for accurate interpretation