Lab test requirements · preparation, ID, referral, and timing United States · 0 communities
LabRequirements Know what your test requires

Midwest · Walnut Allergy Test – Nut Allergies

Walnut Allergy Test – Nut Allergies in Illinois

Walnut Allergy Test – Nut Allergies is a laboratory test you can request directly. A walnut allergy test measures the level of IgE antibodies your immune system makes in response to walnut proteins. It is used along with your history to help evaluate a possible walnut allergy.

Sample typeBlood and/or urine at a collection lab
ReferralIncluded — no referral from your own doctor needed

Lab requirements in Illinois

Here is what you need before ordering and completing the Walnut Allergy Test – Nut Allergies 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
In most cases no special preparation is needed, but you should follow the instructions provided by the collection site. If you take medications, ask the lab or your clinician whether any…
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 is a blood test that looks for specific IgE antibodies directed against walnut proteins. The presence of these antibodies suggests the immune system has been sensitized to walnuts, but it does not by itself prove that a clinical allergy exists. Clinicians interpret the result together with symptoms and other findings.

What it measures

  • Walnut-specific IgE antibody — Reflects immune sensitization to walnut proteins.
  • Total IgE (if included) — Shows the overall level of IgE antibodies in the blood.
  • Other nut-specific IgE (if a panel is ordered) — Helps check for reactions to related tree nuts.

What the test involves

A healthcare professional collects a small blood sample from a vein in your 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 this test when a person reports symptoms such as hives, swelling, stomach upset, or breathing trouble after eating walnuts or foods that may contain them. It is also sometimes used to help assess whether a known nut allergy is still present.

Preparation

In most cases no special preparation is needed, but you should follow the instructions provided by the collection site. If you take medications, ask the lab or your clinician whether any changes are needed before the draw.

How results are reported

Results are typically reported as a numeric level of walnut-specific IgE, often with a qualitative category such as negative, low, moderate, or high. Reference ranges and reporting formats vary by laboratory, so results should always be interpreted using the range provided by the performing lab.

Before you go

  • Whether any medications you take could affect the test
  • The exact turnaround time for results at your chosen lab
  • Whether a referral or order from a clinician is required

Cities

Walnut Allergy Test – Nut Allergies in Illinois communities

Choose your city for local context and to order this test.

Chicago8,595,181Walnut Allergy Test – Nut AllergiesRockford289,763Walnut Allergy Test – Nut AllergiesRound Lake Beach287,012Walnut Allergy Test – Nut AllergiesPeoria255,718Walnut Allergy Test – Nut AllergiesAurora183,447Walnut Allergy Test – Nut AllergiesSpringfield162,588Walnut Allergy Test – Nut AllergiesChampaign153,278Walnut Allergy Test – Nut AllergiesJoliet150,323Walnut Allergy Test – Nut AllergiesNaperville149,013Walnut Allergy Test – Nut AllergiesBloomington134,357Walnut Allergy Test – Nut AllergiesElgin114,156Walnut Allergy Test – Nut AllergiesWaukegan89,751Walnut Allergy Test – Nut AllergiesDecatur88,002Walnut Allergy Test – Nut AllergiesCicero84,905Walnut Allergy Test – Nut AllergiesAlton83,705Walnut Allergy Test – Nut AllergiesKankakee82,095Walnut Allergy Test – Nut AllergiesEvanston78,454Walnut Allergy Test – Nut AllergiesSchaumburg78,053Walnut Allergy Test – Nut AllergiesArlington Heights77,283Walnut Allergy Test – Nut AllergiesBolingbrook73,807Walnut Allergy Test – Nut AllergiesPalatine67,754Walnut Allergy Test – Nut AllergiesSkokie67,444Walnut Allergy Test – Nut AllergiesDeKalb66,624Walnut Allergy Test – Nut AllergiesCarbondale66,482Walnut Allergy Test – Nut AllergiesDes Plaines60,413Walnut Allergy Test – Nut AllergiesOrland Park58,622Walnut Allergy Test – Nut AllergiesOak Lawn58,032Walnut Allergy Test – Nut AllergiesBerwyn56,960Walnut Allergy Test – Nut AllergiesMount Prospect56,510Walnut Allergy Test – Nut AllergiesTinley Park55,988Walnut Allergy Test – Nut AllergiesOak Park54,100Walnut Allergy Test – Nut AllergiesWheaton53,762Walnut Allergy Test – Nut AllergiesNormal53,446Walnut Allergy Test – Nut AllergiesHoffman Estates52,153Walnut Allergy Test – Nut AllergiesDowners Grove50,209Walnut Allergy Test – Nut AllergiesGlenview48,150Walnut Allergy Test – Nut AllergiesElmhurst45,661Walnut Allergy Test – Nut AllergiesLombard44,311Walnut Allergy Test – Nut AllergiesPlainfield44,296Walnut Allergy Test – Nut AllergiesBuffalo Grove43,062Walnut Allergy Test – Nut AllergiesMoline42,660Walnut Allergy Test – Nut AllergiesBelleville42,463Walnut Allergy Test – Nut AllergiesBartlett41,126Walnut Allergy Test – Nut AllergiesRomeoville40,099Walnut Allergy Test – Nut AllergiesCrystal Lake40,082Walnut Allergy Test – Nut AllergiesCarol Stream39,895Walnut Allergy Test – Nut AllergiesStreamwood39,736Walnut Allergy Test – Nut AllergiesQuincy39,687Walnut Allergy Test – Nut AllergiesPark Ridge39,562Walnut Allergy Test – Nut AllergiesUrbana39,189Walnut Allergy Test – Nut AllergiesWheeling39,104Walnut Allergy Test – Nut AllergiesCarpentersville37,940Walnut Allergy Test – Nut AllergiesHanover Park37,545Walnut Allergy Test – Nut AllergiesRock Island37,519Walnut Allergy Test – Nut AllergiesCalumet City36,065Walnut Allergy Test – Nut AllergiesAddison35,999Walnut Allergy Test – Nut AllergiesNorthbrook35,108Walnut Allergy Test – Nut AllergiesOswego34,324Walnut Allergy Test – Nut AllergiesWoodridge34,161Walnut Allergy Test – Nut AllergiesGlendale Heights33,443Walnut Allergy Test – Nut Allergies