ALEX3

The ALEX3 allergy test is a comprehensive blood test that screens for sensitisation to up to 300 allergens in a single sample. It is designed for adults and children who experience unexplained allergic symptoms, such as persistent sneezing, nasal congestion, itchy or watery eyes, skin rashes, hives, wheezing, or gastrointestinal discomfort after eating. It is also valuable for individuals with a known allergy who need a broader assessment, or for those who have not obtained clear answers from smaller allergy panels.

This test covers a wide range of allergen groups, including:

Inhaled allergens
- Tree pollen (e.g. birch, alder, hazel, oak)
- Grass pollen (e.g. timothy grass, rye grass, Bermuda grass)
- Weed pollen (e.g. ragweed, mugwort, plantain)
- House dust mites (e.g. Dermatophagoides pteronyssinus, Dermatophagoides farinae)
- Mould spores (e.g. Alternaria, Aspergillus, Cladosporium)
- Animal dander and proteins (e.g. cat, dog, horse, hamster, rabbit)
- Cockroach and other indoor allergens

Food allergens
- Tree nuts (e.g. peanut, almond, hazelnut, walnut, cashew, pistachio)
- Seeds (e.g. sesame, sunflower, poppy)
- Fruits (e.g. apple, peach, kiwi, banana, strawberry)
- Vegetables (e.g. celery, carrot, tomato, potato)
- Legumes (e.g. soy, lentil, chickpea, pea)
- Grains (e.g. wheat, barley, rye, oat)
- Fish and shellfish (e.g. cod, salmon, shrimp, crab, mussel)
- Egg and dairy (e.g. egg white, egg yolk, cow's milk, casein)
- Meats (e.g. beef, chicken, pork)
- Spices and flavourings (e.g. garlic, mustard, cinnamon)

Other allergens
- Insect venoms (e.g. bee, wasp, hornet)
- Latex
- Medications (e.g. penicillin, amoxicillin)
- Environmental and occupational allergens

Each allergen is assessed individually, allowing your doctor to identify specific sensitisation patterns and distinguish between true allergies and cross-reactivities. The test requires a simple blood sample, which is collected by a trained phlebotomist.

Why it matters
Allergies can significantly affect daily life, sleep, work, and overall wellbeing. Identifying your specific triggers is the first step towards effective management, whether that involves avoidance strategies, medication, or immunotherapy. The ALEX3 test provides a broad, detailed picture that can help your doctor tailor a personalised treatment plan and reduce the guesswork in managing allergic conditions.