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AtWellPrivate GP & Health Clinic

Allergy Testing

One test.
300 answers.

ALEX3 is the world's most comprehensive allergy test. One blood draw. Every answer.

Book a consultation
CQC Regulated · UKAS-Accredited Labs · GP-Reviewed Results
300
allergens tested in one blood draw

Stop guessing. Start knowing.

~15
Skin prick tests cover around 15 allergens
1
Individual blood tests: one allergen at a time
300
ALEX3: 300 allergens, one blood draw

Featured Test

ALEX3. The most comprehensive allergy test available.

Third-generation multiplex technology from MADx, refined using nearly 400,000 real-world patient results from over 90 countries.

300
allergens tested
218
molecular components for precision
107
unique markers found on no other test

Why molecular matters

Traditional allergy tests tell you what you react to. ALEX3 tells you why. By identifying the specific protein causing your reaction, your clinician can distinguish true allergies from cross-reactions.

Example: You test positive for apple, peach, and hazelnut. A traditional test says you're allergic to all three. ALEX3 reveals it's a single birch pollen protein (Bet v 1) cross-reacting -- meaning you likely tolerate cooked forms of all three foods.

Explore all 300 allergens

Every allergen tested in a single ALEX3 blood draw, organised by category.

Almond
Brazil nut
Cashew
Hazelnut
Macadamia
Pecan
Pine nut
Pistachio
Walnut
Mustard
Sesame
Sunflower seed
Poppy seed
Pumpkin seed
14 allergens in Nuts & Seeds

ALEX3 vs traditional testing

Skin Prick TestIndividual IgEALEX3
Allergens tested~15 per session1 per test ordered300 in one test
Stop antihistamines?Yes, 7 days beforeNoNo
Blood requiredNone (skin)One draw per testOne draw for all 300
Results timelineSame day (limited)5-7 days per test5 working days
Cross-reactivity mappingNot availableNot availableFull molecular profiling
Molecular-level precisionNoLimited218 molecular components

Three steps.

01

Book a consultation

Speak with one of our clinicians to discuss your symptoms and confirm ALEX3 is right for you.

02

Simple blood draw

30 minutes at our clinic. No fasting required. No need to stop antihistamines.

03

GP-reviewed results

Your full ALEX3 report, reviewed by a GP and explained in plain language, within 5 working days.

Understanding your allergies isn't about restriction. It's about freedom.

40%
of UK adults have at least one allergy
3x
Allergies have tripled in the last 20 years

Conditions we investigate

ALEX3 provides answers across the full spectrum of allergic conditions.

Hay fever

Eczema

Asthma

Food reactions

Urticaria

Anaphylaxis risk

Frequently asked questions

ALEX3 (Allergy Xplorer 3) is a third-generation multiplex blood test from MADx that screens for 300 allergens in a single sample. It identifies 218 molecular components, giving your clinician the most detailed picture of your allergic profile available today.
Skin prick tests cover around 15 allergens per session and require you to stop antihistamines beforehand. ALEX3 tests 300 allergens from a single blood draw, with no need to pause medication, and includes molecular-level cross-reactivity mapping.
No. Because ALEX3 is a blood test measuring IgE antibodies, antihistamines do not affect the results. Continue taking all medications as normal.
Results are typically available within 5 working days. Every report is reviewed by a GP before being shared with you, along with a plain-language explanation of your results.
Yes. ALEX3 requires only a small blood sample, making it suitable for both adults and children. It’s often preferred over skin prick tests for younger patients as there are no skin reactions involved.
Your GP will walk you through your ALEX3 report in detail. Depending on your results, they may recommend avoidance strategies, further investigation, or referral to an allergy specialist. Book a consultation to get started.

Ready to find out what's causing your symptoms?

One test. 300 answers. Results within 5 working days.

Book a consultation01676 545 111
ALEX3 -- 300 allergens, one blood draw
Book a consultation