Immunoglobulin and IgE allergy test (ALEX)3)
An advanced test that detects IgE-mediated allergies from a simple blood sample. The ALEX test3 It studies more than a hundred allergens to help you understand which substances may be causing your symptoms.
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Detects IgE-mediated allergies to a wide panel of allergens.
It helps identify the cause of your respiratory, skin, or digestive symptoms.
Simple test using blood analysis.
Clear results that differentiate sensitization from true allergy.
Professional guidance to adapt your treatment or avoid triggers.
What is the IgE allergy test (ALEX)3)?
The ALEX test3 It is a state-of-the-art allergy study that analyzes:
El lactulose or glucose breath test measures the amount of hydrogen and methane in the air exhaled after ingesting a specific sugar. High values indicate bacterial overgrowth.
Total IgE, related to allergic predisposition and Specific IgE against a wide range of allergens (foods, pollens, dust mites, animal dander, molds, latex and insects)
This analysis is performed using advanced molecular technology and helps to identify What substances cause allergic reactions?even when other tests have not been conclusive.
What symptoms might suggest you need this test?
This study is useful if you have:
✓ Sneezing, nasal congestion or itching.
✓ Watery eyes or eye irritation.
✓ Persistent cough or shortness of breath.
✓ Hives or skin irritations.
✓ Itching or tingling in the mouth or lips when eating.
✓ Digestive discomfort after certain foods.
✓ Suspected allergic reaction with no known cause.
It is also recommended if you have already had basic allergy tests and need a more comprehensive evaluation.
What exactly does the ALEX test analyze?3?
Total IgE
Indicate if there is a general allergic predisposition.
Specific IgE against allergens
Evaluates the presence of antibodies against multiple groups of allergens:
- Food
- Mites
- Pollens
- Mold
- Animals
- Latex
- Insect poison
Molecular profile
It lets you know if your reaction is due to:
- Awareness & Advocacy (the immune system reacts, but without symptoms)
- True allergy (causes clinical symptoms)
This helps your allergist make more accurate decisions.
Benefits of taking the test
To ensure reliable results:
A complete study in a single extraction
Without the need for multiple tests.
Ideal when symptoms are difficult to link to an allergen
The test helps to clarify hidden causes.
It allows adjusting treatments and avoidance guidelines
Greater precision and therefore, better control of your symptoms.
It helps prevent future reactions
Knowing your triggers allows you to prevent them.
It is complemented by other studies
Your allergist can combine it with skin tests if needed.
How is the test performed?
It is a safe, painless and comfortable procedure.
Step 1:
Request the test
Visit your nearest Ribera Lab center to get tested.
Step 2:
Blood draw
A small sample is obtained without prior preparation.
Step 3:
Laboratory analysis
The laboratory analyzes total and specific IgE using molecular technology.
Step 4:
Report and results
You will receive a clear report with the detected allergens and guidance on how to take them to your allergist.
Interpretation of results
The report states:
- Total IgE: general level of allergic predisposition.
- Specific IgE: which substances generate a reaction.
- Molecular reactivity: which exact components of the allergen react.
Your allergist will assess:
- Medication adjustments
- Severity of the allergy
- Need to avoid certain foods or substances
- Possibility of immunotherapy (vaccines)