$12.00
Priced per marker, with baseline labs included. You’ll see your total before you pay.
Allergy & immunology
IgE test
Immunoglobulin E. Antibody mediating allergic reactions; total IgE can rise in allergy, asthma, and parasitic infection.
At a glance
In about 5 days
Most results are ready in about 5 days. Some specialty markers can take up to 21 days.
Check before your draw
This marker has no preparation tag, but it can still need preparation. Contact us before your draw if you’re not sure.
Walk in at Quest
Your lab order arrives by email. Most Quest locations take walk-ins, so bring it with a photo ID.
What it measures
IgE is the antibody behind allergic reactions. Levels can run higher with allergies, asthma, and eczema, but the total can’t show what you’re allergic to.
Why it matters for women
Asthma is more common in adult women than in men, and it can change around your period and during pregnancy. Long-lasting hives are also more common in women. Total IgE can add context when a doctor is sorting out allergy-related symptoms like these.
You might check it if…
- you deal with asthma or eczema
- you get hives that keep coming back
- allergy symptoms come and go without a clear trigger
What your result may mean
High IgE: what it may mean
High IgE may point to allergies, asthma or eczema (atopy), or to a parasite infection. Rarely, very high levels can come with hyper-IgE syndrome, an inherited immune condition. You may notice sneezing, itchy skin, wheezing or hives, or you may feel fine, and smoking can nudge the number up as well. A high total can't show what you're allergic to, so a clinician may add tests for specific allergens. Asthma can also change around your period or in pregnancy, which can help put symptoms in context.
Low IgE: what it may mean
Low IgE may not be a concern on its own, and many healthy people can have very little of it in their blood. A low total can't rule out an allergy, because someone can still react to one food or pollen with a low or normal total. If sneezing, hives or wheezing continue, a clinician may order tests for specific allergens. With repeated infections, other antibodies such as IgG and IgA may be worth checking, since immune conditions can lower more than one.
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These notes provide context and do not diagnose a condition. Not yet available in NY, NJ, RI, HI, ND, SD or WV.