Hi, An immunoglobulin E (IgE) test measures the blood level of IgE, one of the five sub-classes of antibodies. Antibodies are proteins made by the immune system that attack antigens, such as bacteria, viruses, and allergens. High IgE levels in kids are associated mainly with allergic reactions (when the immune system overreacts to environmental antigens such as pollen or pet dander) and parasitic infections. A normal IgE level ranges from 0 to 380 international units per milliliter,In case of parasitic infection-your child might be having other symptoms like watery diarrhea,​ soft, greasy stools, tiredness, stomach cramps, bloating, and nausea. Children usually contract intestinal parasites when they come into contact with contaminated earth, water, feces or food. Doctors diagnose the infection by taking samples of blood, stool, urine and sending them to a laboratory for analysis. If parasitic infection is positive,then it may be treated with medicines like Mebendazole and Albendezole In case of Allergic reaction (mostly in airways). Your child might be suffering from other symptoms like running nose, cough, watering from eyes, and sneezing, You doctor has given you Myteka sachet which contains Montelukast which helps in allergic reaction. If your kid is suffering from above symptoms, make a list of things which aggravate his symptoms (like certain food, dust) and try to avoid those things. Hope this answers your question. Let me know if I can assist you further. Get well soon to your kid. Regards, Dr. Riddhi Shah