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Mountain West · Onion Allergy Test – Food Allergies

Onion Allergy Test – Food Allergies in Montana

This page explains the onion allergy test – food allergies, what it measures, and how to order it. An onion allergy test uses a blood sample to check for IgE antibodies that may indicate an allergic reaction to onion.

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

Lab requirements in Montana

Here is what you need before ordering and completing the Onion Allergy Test – Food Allergies in MT. 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
No special preparation is usually required, but follow the instructions provided by the collection laboratory. If you take medications, ask the lab or your clinician whether any adjustments…
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 that are associated with allergic sensitivity to onion. It is typically used alongside a clinical history to help evaluate whether onion may be triggering allergic symptoms.

What it measures

  • Onion-specific IgE — Reflects the level of IgE antibodies that bind to onion proteins.
  • Total IgE — Sometimes measured to provide context for allergic tendency, though not specific to onion.

What the test involves

A healthcare professional collects a small blood sample, usually 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, itching, or digestive upset after eating onion or foods containing onion. It is often part of a broader evaluation for food allergies.

Preparation

No special preparation is usually required, but follow the instructions provided by the collection laboratory. If you take medications, ask the lab or your clinician whether any adjustments are needed.

How results are reported

Results are reported as a numeric value that is compared with a reference range established by the testing laboratory. Reference ranges can vary between laboratories, so results should be interpreted in the context of your symptoms and clinical history.

Before you go

  • Whether any medications you take could affect the test
  • The specific reference range used by the laboratory
  • How and when results will be shared with you

Cities

Onion Allergy Test – Food Allergies in Montana communities

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

Billings124,973Onion Allergy Test – Food AllergiesMissoula92,863Onion Allergy Test – Food AllergiesGreat Falls62,112Onion Allergy Test – Food AllergiesBozeman51,574Onion Allergy Test – Food AllergiesButte34,368Onion Allergy Test – Food AllergiesHelena32,060Onion Allergy Test – Food AllergiesKalispell24,260Onion Allergy Test – Food AllergiesBelgrade10,555Onion Allergy Test – Food AllergiesHavre9,417Onion Allergy Test – Food AllergiesAnaconda9,380Onion Allergy Test – Food AllergiesHelena Valley Southeast9,316Onion Allergy Test – Food AllergiesHelena Valley West Central8,550Onion Allergy Test – Food AllergiesMiles City8,441Onion Allergy Test – Food AllergiesLivingston8,110Onion Allergy Test – Food AllergiesEvergreen7,988Onion Allergy Test – Food AllergiesWhitefish7,783Onion Allergy Test – Food AllergiesLaurel7,164Onion Allergy Test – Food AllergiesLockwood7,162Onion Allergy Test – Food AllergiesSidney6,240Onion Allergy Test – Food AllergiesLewistown5,967Onion Allergy Test – Food AllergiesFour Corners5,649Onion Allergy Test – Food AllergiesColumbia Falls5,304Onion Allergy Test – Food AllergiesOrchard Homes5,170Onion Allergy Test – Food AllergiesPolson5,161Onion Allergy Test – Food AllergiesGlendive4,928Onion Allergy Test – Food AllergiesBigfork4,683Onion Allergy Test – Food AllergiesHelena Valley Northwest4,653Onion Allergy Test – Food AllergiesHamilton4,632Onion Allergy Test – Food AllergiesLolo4,338Onion Allergy Test – Food AllergiesMalmstrom AFB4,098Onion Allergy Test – Food AllergiesDillon3,930Onion Allergy Test – Food AllergiesHardin3,754Onion Allergy Test – Food AllergiesHelena Valley Northeast3,607Onion Allergy Test – Food AllergiesNorth Browning3,253Onion Allergy Test – Food AllergiesGlasgow3,192Onion Allergy Test – Food AllergiesBig Sky3,141Onion Allergy Test – Food AllergiesShelby3,139Onion Allergy Test – Food AllergiesCut Bank3,049Onion Allergy Test – Food AllergiesDeer Lodge2,938Onion Allergy Test – Food AllergiesConrad2,758Onion Allergy Test – Food AllergiesLibby2,745Onion Allergy Test – Food AllergiesMontana City2,735Onion Allergy Test – Food AllergiesWolf Point2,638Onion Allergy Test – Food AllergiesLakeside2,463Onion Allergy Test – Food AllergiesLame Deer2,231Onion Allergy Test – Food AllergiesTownsend2,224Onion Allergy Test – Food AllergiesEast Missoula2,162Onion Allergy Test – Food AllergiesColstrip2,094Onion Allergy Test – Food AllergiesThree Forks2,084Onion Allergy Test – Food AllergiesColumbus2,069Onion Allergy Test – Food AllergiesPablo2,037Onion Allergy Test – Food AllergiesRed Lodge2,032Onion Allergy Test – Food AllergiesMalta2,031Onion Allergy Test – Food AllergiesCrow Agency1,993Onion Allergy Test – Food AllergiesStevensville1,959Onion Allergy Test – Food AllergiesKing Arthur Park1,951Onion Allergy Test – Food AllergiesClancy1,902Onion Allergy Test – Food AllergiesManhattan1,884Onion Allergy Test – Food AllergiesWest Glendive1,868Onion Allergy Test – Food AllergiesChoteau1,826Onion Allergy Test – Food Allergies