High total IgE suggests allergic sensitization and atopic conditions (eczema, allergic rhinitis, asthma) and can also occur with parasitic infections, some immunodeficiencies (e.g., hyper‑IgE syndrome), drug reactions, or certain cancers. Elevated IgE is non‑specific: it supports but doesn’t confirm diagnosis and doesn’t reliably predict severity. Your clinician may order specific IgE tests and clinical evaluation to identify the cause and guide treatment.

The PhadiaTop IgE test is a blood screening assay that detects IgE antibodies to a panel of common inhalant allergens. It identifies allergic sensitization and helps decide whether further allergy testing or specialist referral is needed. A positive result suggests atopy but must be interpreted alongside symptoms, because sensitization does not always indicate clinical allergy.

Total IgE is the blood measurement of all immunoglobulin E antibodies a person has. Raised total IgE often reflects allergic or atopic conditions (eczema, allergic rhinitis, asthma) or parasitic infection, but it’s nonspecific: normal levels don’t exclude allergy and elevated levels don’t identify the trigger. It’s used alongside clinical history and specific IgE or skin tests to diagnose allergies.

Normal total serum IgE in adults is generally below 100–150 IU/mL. Reference ranges vary with age and laboratory methods, so children have different expected values. Mildly raised IgE can reflect allergies, parasitic infection, or other immune conditions. Always compare results with the lab’s age-specific reference range and discuss abnormal values with your healthcare provider for proper interpretation.

Markedly raised IgE is usually allergic or parasitic, but certain cancers can cause elevated IgE. Rare IgE‑secreting multiple myeloma and some lymphomas — classically Hodgkin lymphoma and some B‑cell non‑Hodgkin lymphomas — may raise IgE. Because these cancer causes are uncommon, unexplained high IgE warrants further evaluation by a clinician and hematology workup.

If IgE is high, avoid known allergens and exposures: pollen, dust mites, mold, pet dander, and specific foods that trigger your IgE‑mediated reactions (e.g., peanuts, shellfish, milk, eggs). Avoid tobacco smoke, strong fragrances and aerosol sprays, damp indoor environments, insect stings, and harsh cleaning chemicals. Limit outdoor activities during high‑pollen periods until allergies are controlled.