What Is IgGAssay?

User-Friendly TYPE III Allergy Test


The IgGAssay IgG test is a microarray-based test measuring IgG antibodies to 200 commonly consumed foods using dry blood samples taken via finger prick.

This advanced technology can be used to detect which specific food proteins your body may struggle to digest. This maldigestion may be temporary or permanent, and it can be related to many factors such as enzyme deficiencies.



We analyze IgG antibody levels against the proteins of 200 foods using IgG (FC fragment specific), antigen, antiserum, and control tests. This progressive technique helps us identify the foods that respond negatively to your system—all with just a few drops of blood dispensed by a finger prick.


  • Up to 200 extracts are be isolated onto glass microarray slides;
  • Food extracts are incubated with either blood, serum, or plasma;
  • The unbound proteins are washed, and a conjugate is added;
  • The conjugate binds to food extract-bound antibodies, and any unbound conjugate is removed by washing;
  • The slides are dried by centrifugation and then scanned;
  • High-resolution laser scanners and software are used to detect results.


Based in Florida, our lab, Microwell Laboratories Inc., operates under the Clinical Laboratory Improvement Amendments of 1988 under the US Federal Regulatory Standards, ensuring that your test results meet and exceed industry standards for clinical laboratory testing.


Microwell Laboratories (CLIA NUMBER: 10D2266032) only uses food protein extracts manufactured by the German company Diagnostische Systeme & Technologien GmbH.