There are no requirements for this test, no need to fast. Neither is an appointment necessary, blood draws are performed from 8:00am – 10:30am from Monday to Friday.
It is also possible to carry out the analysis by taking a sample of nasal mucus, the extraction of which is done in the laboratory.
The results are delivered within 48-72 hours. Notify at the time of sampling of the IgG to be tested.
Allergies are a common chronic problem affecting the immune system. Normally, the immune system fights viruses, bacteria, and other infectious agents. With an allergy, the immune system treats a harmless substance such as dust or pollen as a threat. To fight it, it produces antibodies called immunoglobulin E (IgE).
The substances that cause an allergic reaction are called allergens. There are common food allergies and allergens in addition to pollen and dust such as animal dander, foods such as nuts and shellfish, and certain medications such as penicillin. Allergy symptoms can range from sneezing and stuffy nose to a potentially life-threatening complication called anaphylactic shock. Blood allergy tests measure the amount of IgE antibodies in the blood. A small amount of IgE antibodies is normal. But high IgE levels may indicate an allergy.
When talking about food allergies, it is important to understand the difference between allergies and food intolerances.
- IgE food allergy: an evident pathology in which a component of the food triggers an immediate reaction, such as diarrhoea, oedema, hives, etc.
- IgG-type food intolerance: It is more difficult to detect and its symptoms are usually moderate, so it is common for us not to notice this intolerance and to go back to eating foods that are harmful to us and make us sick. That is why it is so important to perform such tests.
If you have doubts about which test to take, do not hesitate to consult us.