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ALEX2 – Allergy Explorer

For a full allergen list please visit our website www.macroarraydx.com

ALEX 2 – Allergy Explorer

*see instructions for use. PRODUCT CHARACTERISTICS. ALEX2 is a state-of-the-art multiplex ELISA test based on proven immunoassay chemistry and detection methods.

ALEX – Allergy Explorer THE SMART WAY TO EXPLORE ALLERGY

Tests per run Up to 50 per operator, manual processing Measuring range sIgE 0.3–50 kU A/L, quantitative Measuring range tIgE ≤ 20–2500 kU/L, semi-quantitative Precision/CV % total 12 % Sample requirements 100 microliter…

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ALEX2� � Allergy Explorer
THE SMART WAY TO EXPLORE ALLERGY

FRUITS
ANIMAL DANDER

LEGUMES

HYMENOPTERA VENOMS

CCDs

SEEDS

EGG

CEREALS

LATEX
MILK

POLLEN

SPICES

SEA FOOD

MITES

TREE NUTS
TOTAL I g E MEAT
VEGETABLES
SPORES

Macro Array Diagnostics is a Vienna-based MedTech company. We develop, produce and distribute tests, instruments and software for allergy diagnostics and research applications. Our products allow flexible, reliable and affordable sensitization profiling of each patient. Our multidisciplinary team ensures that customers receive the most advanced tools to fulfill their diagnostic needs.
For more information visit: www.macroarraydx.com

MULTIPLEX Simultaneous determination of multiple analytes (e.g. allergens)

Allergy Explorer is the first in vitro multiplex allergy test allowing simultaneous measurement of total IgE (tIgE) and specific IgE (sIgE) against a plethora of allergen extracts and molecular allergens.
Based on our test panel composition of allergen extracts and molecular allergens, a near complete picture of each patient's sensitization status is obtained. ALEX2 is based on our proprietary nano-bead technology. Every allergen (extract) can be individually optimized for production. The flexible analysis software, allows our customers to analyze tailormade allergen panels as they see fit for their clinical needs � Multiplex on demand.

The ALEX2 assay protocol integrates a powerful Cross-reactive Carbohydrate Determinants (CCDs) inhibitor during serum incubation, which will clear up your specific IgE results. This reduces the interpretative burden for physicians of CCD positive patients and increases the specificity of our test results.

Simultaneous measurement of total and specific IgE Near-complete allergen panel, individually optimized Multiplex test with on-demand panel composition Integrated CCD inhibition

SIMULTANEOUS DETECTION OF tIgE, sIgE EXTRACTS & sIgE MOLECULAR ALLERGENS
Conventional single-plex test systems can be laborious in obtaining comprehensive sensitization profiles. Often, several testing cycles are required to come to a clear diagnosis, and total IgE has to be tested separately. To streamline this fragmented approach, ALEX2 gives you a near complete picture of your patient's situation including total IgE. Close to 120 allergen extracts and up to 180 molecular allergens are at your disposal. Exclusively available molecular allergens include risk markers from storage protein families and other new markers (e.g. house dust mite, malassezia sympodialis).
For a full allergen list please visit our website www.macroarraydx.com

SINGLEPLEX Determination of one analyte per assay (e.g. one allergen)
CEREALS

TOTAL IgE
SPORES

ALLERGY EXPLORER KEY FEATURES

ANIMAL DANDER

LEGUMES

HYMENOPTERA VENOMS

FRUITS

SEEDS
EGG

TREE NUTS

LATEX
MILK

POLLEN
SEA FOOD

SPICES CCDs

MITES

VEGETABLES

MEAT

DISCOVER THE POWER OF MULTIPLEX ON DEMAND
Specifically designed for ALEX2, the Raptor analysis software offers maximum flexibility. Choose between up to 15 predefined symptomatic or allergen source based panels (like pollen, anaphylaxis, nuts, insects, etc.)
Lab measurement results will only be displayed and reported for the selected allergens. Alternatively, define your own custom allergen panels to match your personal and your patients needs. This allows you to account for regional differences in allergen exposure and avoids unnecessary testing.
Full flexibility for physicians Adjust the ALEX2 allergen panel to individual needs Avoid paralysis by analysis

NEAR* CROSS-REACTIVE-DETERMINANTS (CCDs) FREE ALLERGY DIAGNOSIS Most allergen preparations originating from plants or insects contain cross-reactive carbohydrate determinants (CCDs). IgE Antibodies directed against CCDs cross-react with all proteins containing these CCD epitopes. Approximately 25% of patients have anti-CCD IgEs, resulting in a significant number of positive sIgE results, especially when testing allergen extracts. Anti-CCD antibodies have been reported to be clinically insignificant (Malandain H et al. 2007; Eur Ann Allergy Clin Immunol).
Reduce CCD interferences Get a clear picture of your patient's sensitizations Lower your interpretative burden and save time Increase specificity
Visit www.macroarraydx.com for an educational clip on CCD inhibition.
*see instructions for use

PRODUCT CHARACTERISTICS

ALEX2 is a state-of-the-art multiplex ELISA test based on proven immunoassay chemistry and detection methods. The analytical performance parameters are aligned with the commercial assay systems currently available. A high correlation to reference methods is expected.
For further details please refer to our Instructions for Use or visit www.macroarraydx.com

Detection method Assay time Tests per run Measuring range sIgE Measuring range tIgE Precision/CV % total Sample requirements Interference
Calibration method

OVERVIEW
Colourimetric enyzme assay 3.5 hours Up to 50 per operator, manual processing 0.3�50 kUA/L, quantitative  20�2500kU/L, semi-quantitative 12% 100 microliter serum or plasma (except EDTA) No significant interference from high total IgE, hemoglobin, bilirubin or triglycerides. See instrutions for use for details. Integrated, batch and allergen correction factors encoded by integrated 2D barcode

REQUIRED EQUIPMENT

All necessary lab equipment for processing & analysis of ALEX2 will be provided by Macro Array Diagnostics:

ALEX2 KIT 1

ARRAY HOLDER 2

IMAGEXPLORER 3 LAB ROCKER &
INCUBATION CHAMBER 4 RAPTOR ANALYSIS SOFTWARE 5
WINDOWS PC/LAPTOP (ONLY PROVIDED ON REQUEST) 6

IMAGER

While some imaging or scanning devices are expensive, delicate and bulky, MADx's ImageXplorer is an easy-touse and affordable device requiring only 15x18x18cm of your precious lab space. Both connection and power supply are managed through your personal computers USB port. The acquisition and analysis of a single test takes only seconds.

KEY FEATURES IMAGEXPLORER
Plug and play setup, easy to use Affordable for every lab Compact footprint Maintenance free

CUSTOMIZED ARRAYS FOR
RESEARCH

To support your research efforts, we custom manufacture arrays with panels of selected ALEX2 allergens combined with your own allergen preparations. Collaborations with scientists are always welcome at MADx!
Customized solutions for your research needs Minimum order requirement of only 300 tests Price on request

CLINICAL UTILITY

The ALEX2 test is intended to support the diagnosis of allergic diseases in conjunction with other diagnostic findings such as anamnesis, clinical history or physical examination.

In addition to identifying the sensitizing allergen sources, ALEX2 provides an almost complete and high resolution molecular IgE profile at no additional effort or cost. Compared to extract-based diagnostics alone, this can add relevant diagnostic information on:

Indication for specific immunotherapy Risk-assessment for your patient to avoid severe allergic reactions to foods Molecular information about cross-reactivity

1 INDICATION FOR IMMUNOTHERAPY
Specific immunotherapy is a causal treatment for allergic diseases especially in inhalative- and venom allergies. With a diagnostic approach that only uses extracts, often multiple allergen sources show a positive test result. These results can either indicate a true co-sensitization or a cross-sensitization. To resolve this dilemma molecular allergens are used.
Cross-reactive Allergens from Profilin and Polcalcin families e.g. Phl p 7/12

Ole e 1/Fra e 1 pos.
Immunotherapy with Olea europea/ Fraxinus excelsior
Ole e 1/Fra e 1 neg. � crossreactive allergens pos.
No immunotherapy for Olive and/or Ash pollen*

Olive/Ash pollen

Birch pollen

Grass pollen

Bet v 1 pos.
Immunotherapy with Birch pollen
Bet v 1 neg. � crossreactive allergens pos.
No immunotherapy with Birch pollen*

Phl p 1 and/or 5 pos.
Immunotherapy with Grass pollen

Phl p 1 and/or Phl p 5 neg. � crossreactive
allergens pos.
No Immunotherapy with Grass pollen*

*look further for primary sensitizer Source: based on SIT indication (Molekulare Allergiediagnostik, Kleine-Tebbe&Jakob 2015, p.189)

STORAGE PROTEINS

2 RISK ASSESSMENT
Extract-based allergy tests have proven useful for the identification of the culprit allergen source. However, only an additional molecular view can give all the relevant clues to complement the extract test results and to reach the optimal therapeutic decision.
For example, storage proteins such as Ara h 1,2,3 or 6 can cause allergic symptoms up to anaphylactic shock. In contrast, Ara h 8, the PR-10 protein is usually not able to cause serious harm, while still rendering the extract test result positive, thus generating potential uncertainty for both physician and patient. Similar constellations exist for various other food allergens such as soy, hazel-, or walnut.

7S-Globulin (Vicilin)
11S-Globulin (Legumin)

Ara h 1 Ara h 3

2S-Albumin

Ara h 2 Ara h 6 Ara h 7

nsLTP

Ara h 10 Ara h 11 Ara h 14 Ara h 15
Ara h 9

Ara h 8 Ara h 5

Source: Risk assessment in peanut (Molekulare Allergiediagnostik, Kleine-Tebbe&Jakob 2015, p.207, Adaption)

PR-10 Profilin Oleosins

ORDERING INFORMATION
ALEX2 gives you the full picture, not just pieces of the puzzle. Order address: orders@macroarraydx.com

Product 2 Array holders ImageXplorer Raptor analysis software Incubation chamber Lab rocker ALEX2 Kit (20 tests)

Art. No. 14-0000-00 11-0000-01 12-0000-01 15-0000-00 13-0000-00 02-2001-01

01-MKT-01-EN-06 10/2019

Macro Array Diagnostics Gutheil-Schoder Gasse 17, 1230 Wien
Phone: +43 (1) 865 25 73 Mail: office@macroarraydx.com
www.macroarraydx.com