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Mid-Atlantic · Grapefruit Allergy Test – Citrus Allergies

Grapefruit Allergy Test – Citrus Allergies in Delaware

Below is a plain-language overview of the grapefruit allergy test – citrus allergies. A grapefruit allergy test checks for allergic antibodies in your blood that may react to grapefruit or related citrus fruits. It can help explain symptoms that appear after eating or touching these fruits.

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

Lab requirements in Delaware

Here is what you need before ordering and completing the Grapefruit Allergy Test – Citrus Allergies in DE. 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
Fasting is required for this test — follow the collection lab's instructions.
Preparation
Preparation is usually minimal, but specific instructions can vary by collection site. Follow the lab's instructions and ask the collecting laboratory if you have questions about…
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, which are proteins the immune system can make in response to allergens. A blood sample is analyzed to see whether antibodies that bind to grapefruit proteins are present. Results are interpreted alongside your symptom history and other allergy testing.

What it measures

  • Grapefruit-specific IgE — Reflects immune system sensitization to grapefruit proteins
  • Citrus cross-reactive IgE — May indicate antibody binding to related citrus allergens
  • Total IgE — Sometimes included as a general measure of allergic antibody level

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 someone reports symptoms such as itching, hives, swelling, or digestive upset after eating grapefruit or other citrus fruits. It is typically used with a detailed history to help evaluate whether an allergy is possible.

Preparation

Preparation is usually minimal, but specific instructions can vary by collection site. Follow the lab's instructions and ask the collecting laboratory if you have questions about medications, fasting, or timing.

How results are reported

Results are reported as a numerical level or a qualitative category, depending on the laboratory method used. Reference ranges and reporting formats vary by laboratory, so results should always be interpreted in the context of the lab that performed the test and your overall clinical picture.

Before you go

  • Whether any medications or foods need to be avoided before the blood draw
  • How long results usually take at that specific laboratory
  • Whether a repeat or additional allergy test is recommended based on your symptoms

Cities

Grapefruit Allergy Test – Citrus Allergies in Delaware communities

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

Dover125,931Grapefruit Allergy Test – Citrus AllergiesWilmington70,926Grapefruit Allergy Test – Citrus AllergiesNewark31,393Grapefruit Allergy Test – Citrus AllergiesMiddletown23,001Grapefruit Allergy Test – Citrus AllergiesBear21,625Grapefruit Allergy Test – Citrus AllergiesGlasgow15,342Grapefruit Allergy Test – Citrus AllergiesBrookside14,202Grapefruit Allergy Test – Citrus AllergiesHockessin13,464Grapefruit Allergy Test – Citrus AllergiesSmyrna12,619Grapefruit Allergy Test – Citrus AllergiesPike Creek Valley11,718Grapefruit Allergy Test – Citrus AllergiesMilford11,249Grapefruit Allergy Test – Citrus AllergiesClaymont9,508Grapefruit Allergy Test – Citrus AllergiesWilmington Manor8,212Grapefruit Allergy Test – Citrus AllergiesNorth Star8,009Grapefruit Allergy Test – Citrus AllergiesSeaford7,852Grapefruit Allergy Test – Citrus AllergiesPike Creek7,398Grapefruit Allergy Test – Citrus AllergiesGeorgetown7,079Grapefruit Allergy Test – Citrus AllergiesEdgemoor6,681Grapefruit Allergy Test – Citrus AllergiesMillsboro6,542Grapefruit Allergy Test – Citrus AllergiesElsmere6,167Grapefruit Allergy Test – Citrus AllergiesNew Castle5,482Grapefruit Allergy Test – Citrus AllergiesHighland Acres3,910Grapefruit Allergy Test – Citrus AllergiesLaurel3,886Grapefruit Allergy Test – Citrus AllergiesClayton3,845Grapefruit Allergy Test – Citrus AllergiesCamden3,786Grapefruit Allergy Test – Citrus AllergiesRising Sun-Lebanon3,772Grapefruit Allergy Test – Citrus AllergiesHarrington3,730Grapefruit Allergy Test – Citrus AllergiesLewes3,257Grapefruit Allergy Test – Citrus AllergiesMilton3,224Grapefruit Allergy Test – Citrus AllergiesDover Base Housing3,135Grapefruit Allergy Test – Citrus AllergiesLong Neck3,022Grapefruit Allergy Test – Citrus AllergiesSelbyville2,806Grapefruit Allergy Test – Citrus AllergiesGreenville2,763Grapefruit Allergy Test – Citrus AllergiesTownsend2,671Grapefruit Allergy Test – Citrus AllergiesOcean View2,556Grapefruit Allergy Test – Citrus AllergiesBridgeville2,499Grapefruit Allergy Test – Citrus AllergiesDelmar2,241Grapefruit Allergy Test – Citrus AllergiesRiverview2,091Grapefruit Allergy Test – Citrus AllergiesDelaware City1,885Grapefruit Allergy Test – Citrus AllergiesWoodside East1,867Grapefruit Allergy Test – Citrus AllergiesMillville1,790Grapefruit Allergy Test – Citrus AllergiesKent Acres1,756Grapefruit Allergy Test – Citrus AllergiesCheswold1,705Grapefruit Allergy Test – Citrus AllergiesWyoming1,636Grapefruit Allergy Test – Citrus AllergiesRodney Village1,472Grapefruit Allergy Test – Citrus AllergiesGreenwood1,459Grapefruit Allergy Test – Citrus AllergiesRehoboth Beach1,392Grapefruit Allergy Test – Citrus AllergiesBellefonte1,294Grapefruit Allergy Test – Citrus AllergiesNewport1,224Grapefruit Allergy Test – Citrus AllergiesSt. Georges1,197Grapefruit Allergy Test – Citrus AllergiesFelton1,144Grapefruit Allergy Test – Citrus AllergiesFrankford1,088Grapefruit Allergy Test – Citrus AllergiesDagsboro1,087Grapefruit Allergy Test – Citrus Allergies