Onion Allergy Panel for Berkeley
This page explains the onion allergy test in Berkeley, IL, what it measures, and how to arrange it. An onion allergy test is a blood test that checks whether your immune system reacts to proteins found in onions. It is usually ordered when someone has symptoms such as itching, hives, or stomach upset after eating onions or foods containing onion powder.
For the full, location-independent guide to this test, see Onion Allergy Panel explained.
- Sample type
- blood
- Category
- Allergy
- Turnaround
- 1-3 business days
- Price
- $49
- Referral
- Not required
An onion allergy test is a blood test that checks whether your immune system reacts to proteins found in onions. It is usually ordered when someone has symptoms such as itching, hives, or stomach upset after eating onions or foods containing onion powder.
About onion allergy panel in Berkeley
Berkeley is a smaller community in Midwest, where residents have dependable access to clinical laboratory services. Because steady communities like Berkeley sit within a broader Midwest network, planning a draw ahead of time tends to pay off.
Rather than calling around, compare tests here, then arrange a draw in the Berkeley area when it suits you.
Confidentiality is built in — orders are private and results are accessed securely. Always confirm current preparation steps, hours, and any fees directly with the collection lab.
What it measures
- Onion-specific IgE — Antibodies made by the immune system that can recognize onion proteins.
- Total IgE — A general measure of allergic antibody levels in the blood.
- Allergen component profile — A closer look at which specific onion proteins may trigger a reaction.
Preparation
No fasting or special preparation is usually needed. Tell your clinician about any medicines you take, because some antihistamines can affect allergy test results.
Results and what they mean
Results are reported as a level or class for onion-specific IgE, along with a total IgE value. A clinician interprets these numbers together with your symptoms and history, because a positive result alone does not always mean you have an allergy. This is general information, not medical advice.
How to order in Berkeley
- Place a confidential order for the onion allergy panel online.
- Choose a collection site in or near Berkeley, IL.
- Attend your appointment — most draws take only a few minutes.
- Review results securely, typically within 1–3 days.
Confirm preparation, hours, and any fees with the collection lab in Berkeley before your visit.
Frequently asked questions
Does a positive result mean I am allergic to onions?
Not always. A positive result shows your immune system has made antibodies to onion proteins, but only a clinician can decide whether that means a true allergy based on your symptoms.
Do I need to avoid onions before the test?
No. You do not need to change your diet before this blood test unless your clinician tells you otherwise.
How long does it take to get results?
Results are usually available within 1 to 3 business days.
Can this test tell me how severe a reaction will be?
No. The test helps show whether you are sensitized to onions, but it cannot predict how mild or severe a future reaction might be.