Evaluation of a novel automated allergy microarray platform compared with three other allergy test methods

Area of Science:

• Immunology
• Allergy Diagnostics
• Medical Technology

Background:

• Microarray platforms allow simultaneous measurement of multiple allergens from small serum samples, showing promise for allergy diagnostics.
• Current allergy diagnostics include skin prick tests (SPT), ImmunoCAP, and manual microarray platforms like Immuno-Solid phase Allergen Chip (ISAC).

Purpose of the Study:

• To compare the diagnostic performance of a fully automated microarray system (Microtest) against a manual microarray (ISAC) and established singleplex tests (SPT, ImmunoCAP).
• To evaluate the agreement between different allergy testing methods in a cohort of adult allergic patients.

Main Methods:

• A comparative study involving 103 adult allergic patients.
• All patients underwent testing with four methods: SPT, ImmunoCAP, Microtest, and ISAC 112.
• Analysis of 3485 pairwise test results to assess agreement and correlation coefficients for common allergens and components.

Main Results:

• All four methods demonstrated comparable results, with a positive/negative agreement ranging from 81% to 88%.
• High agreement (correlation coefficients 0.73–0.95) was observed between methods for prevalent allergens and their components.
• The automated Microtest system showed results consistent with established diagnostic tests.

Conclusions:

• Microarray platforms are efficient and valuable tools for characterizing specific immunoglobulin (Ig)E profiles in allergic patients using minimal serum.
• The Microtest automated system aligns with current diagnostic standards.
• Further validation is recommended across diverse populations, regions, and allergen panels.