FastCheckPOC® detects allergen-specific IgE antibodies level
IgG has been PROVED TO BE NOT SUITABLE for allergy testing!
Under PEDIATRICS which has high impact factor, and total citations among all journals in the field of pediatrics, has stated that:
Misdiagonosis of food allergy and inappropriate use of unproven testing modalities may lead to a harmful food-elimination diet.
Of note, the European Academy of Allergy and Clinical Immunology Task Force report and the National Institute of Allergy and Infectious Diseases-sponsored expert panel both recommend against the use of IgG testing for routine evaluation of food allergies, as positive IgG levels likely represent a physiologic response of the immune system after exposure to a food and are not indicative of clinical disease.
A 15-months-old girl was found to suffer from atopic dermatitis, and kwashiorkor and anaemia with low hemoglobin and zinc level due to wrong diagnosis of IgG allergy testing. Sparse hair, edematous hand and feet, and swollen cheeks and abdomen were also found in the baby.
Reference:
http://www.ncbi.nlm.nih.gov/pubmed/23733797