Sage Test Technology

The Sage ELISA Delayed Food Allergy Test

The Sage Delayed Food Allergy Test is based on an Enzyme Linked Immunosorbant Assay (ELISA) which measures the presence of both IgG and immune complexes against a wide variety of foods, food additives and dye antigens in a patient's serum. Unlike other ELISA tests which measure only IgG, this test employs a unique process (patents pending) to measure both IgG and immune complex. Simultaneously measuring Type II and III reactions, the test provides physicians with a more complete picture of the allergic process than measuring IgG alone.

Distinct Advantages of the SAGE ELISA Food Allergy Test:

  • Quantitative: The kits employ a standard curve with precise amounts of antibody to calibrate the reactivity of each sample and to standardize each run.
  • Standard Curve: >= 0.95 by linear regression
  • Statistical Analysis: 95% confidence limits for true positives or true negatives
  • Specificity: Human IgG heavy chain all isotypes (IgG 1, 2, 3, 4) and Immune Complexes. The conjugate does not cross react with other classes of antibody or Kappa or Lambda light chains.
  • Micro Arrays: Food antigens are plated in duplicate using automated workstations that ensure coating accurate volumes and the correct placement of the antigens.

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