IgE (Total)
IgE (immunoglobulin E) is an antibody associated with allergic reactions and parasitic infections. It triggers the release of histamine and other chemicals from mast cells and basophils.
Category: Inflammation & Immune
Also known as: ige, total ige, immunoglobulin e, serum ige, Immune globulin E
Reference range: 0–100 IU/mL (Source: ABIM)
Standard unit: IU/mL
High values may indicate
High IgE levels may indicate allergic conditions (asthma, hay fever, eczema, food allergies), parasitic infections, hyper-IgE syndrome, allergic bronchopulmonary aspergillosis, or certain lymphomas.
Low values may indicate
Low IgE levels are usually normal. Very low levels may occasionally be seen in some immunodeficiency disorders.
Frequently asked questions
- What is a normal IgE (Total) level?
- A typical reference range for IgE (Total) is 0–100 IU/mL (source: ABIM). Reference ranges vary by laboratory, age, and sex, so always compare against the range on your own lab report.
- What units is IgE (Total) measured in?
- IgE (Total) is most commonly reported in IU/mL. Labs in different countries may use other units — you can convert between them with BloodId's blood test unit converter.
- Where do IgE (Total) reference ranges come from?
- BloodId uses ABIM standard reference ranges and educational information from MedlinePlus (see our methodology). Reference ranges still vary by lab, age, and sex, so always compare against your own report.
- Can I track IgE (Total) over time?
- Yes. Upload results from any lab and BloodId charts your IgE (Total) over time against its reference range, so you can see whether the trend is rising, falling, or stable.
Related biomarkers
Source: MedlinePlus, U.S. National Library of Medicine
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