Midwest · Allergy Testing
Allergy Testing in Illinois
Allergy Testing is a laboratory test you can request directly. Allergy testing uses a small blood sample to check for immunoglobulin E antibodies that may be linked to allergic reactions. It can help identify sensitivities to common foods, pollens, molds, pet dander, and other substances.
Lab requirements in Illinois
Here is what you need before ordering and completing the Allergy Testing in IL. Review each item and confirm the details with the collection lab.
- Physician's order
- Included. A physician's order is required for lab testing and is provided for you by our partner's physicians — no referral from your own doctor is needed.
- Fasting
- Some tests require fasting or avoiding certain foods or drinks beforehand. You will be informed when you order — confirm the details with the collection lab.
- Preparation
- Preparation needs can vary, so follow the instructions provided by the collection laboratory. Ask the lab whether any medications or foods should be avoided before the sample is taken.
- Sample & visit
- A blood and/or urine sample is collected; the visit usually takes about 10 minutes.
- Identification
- Bring the lab requisition form from your account. The collection lab may also ask for a government-issued photo ID.
- Turnaround
- 1-3 business days
- Availability
- Our partner lab does not serve ND, RI, NY, NJ, MD or HI. Confirm availability for your location with the collection lab.
Before you go
- Order your test before visiting a lab, then use the requisition form in your account.
- Print the requisition form, or fax it to the lab directly from your account.
- No scheduling is needed — visit the collection lab during its normal business hours.
- A blood and/or urine sample is collected; the visit usually takes about 10 minutes.
- Bring a government-issued photo ID in case the lab requests it.
- Results are posted to your secure account within 1–3 business days.
Requirements are summarized from our partner lab's published policies. Preparation and availability can change — confirm current instructions with the collection lab before your visit.
What this test is
This test measures specific IgE antibodies in the blood, which are part of the immune system's response to allergens. It is a laboratory method that can support a clinician's evaluation of allergies when used alongside a person's history and other findings.
What it measures
- Total IgE — Overall level of IgE antibodies in the blood
- Specific IgE to foods — Antibody response to individual food allergens such as milk, egg, peanut, or wheat
- Specific IgE to pollens — Antibody response to tree, grass, or weed pollens
- Specific IgE to molds — Antibody response to common indoor and outdoor molds
- Specific IgE to pet dander — Antibody response to proteins from cats, dogs, or other animals
- Specific IgE to dust mites — Antibody response to microscopic dust mite allergens
- Specific IgE to insect venoms — Antibody response to stings from bees, wasps, or similar insects
What the test involves
A healthcare professional collects a small blood sample, usually from a vein in the arm, using a standard blood draw. The sample is then sent to a laboratory for analysis.
Why it is often ordered
A clinician may order allergy testing to help investigate symptoms such as sneezing, itching, hives, or digestive upset that could be related to allergens. It is typically used as one part of a broader evaluation, not as a stand-alone diagnosis.
Preparation
Preparation needs can vary, so follow the instructions provided by the collection laboratory. Ask the lab whether any medications or foods should be avoided before the sample is taken.
How results are reported
Results are reported as levels of specific IgE antibodies for each allergen tested, often with a qualitative interpretation such as negative, low, or high. Reference ranges and reporting formats differ between laboratories, so results should always be interpreted in the context of the lab's own ranges and a clinician's assessment.
Before you go
- Whether any medications should be stopped before the test
- Which allergens are included in the panel being ordered
- How and when results will be shared with you or your clinician
Cities
Allergy Testing in Illinois communities
Choose your city for local context and to order this test.