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South · Grapefruit Allergy Test – Citrus Allergies

Grapefruit Allergy Test – Citrus Allergies in North Carolina

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 North Carolina

Here is what you need before ordering and completing the Grapefruit Allergy Test – Citrus Allergies in NC. 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 North Carolina communities

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

Charlotte1,516,107Grapefruit Allergy Test – Citrus AllergiesRaleigh1,062,018Grapefruit Allergy Test – Citrus AllergiesWinston-Salem420,400Grapefruit Allergy Test – Citrus AllergiesDurham399,762Grapefruit Allergy Test – Citrus AllergiesGreensboro345,270Grapefruit Allergy Test – Citrus AllergiesFayetteville328,827Grapefruit Allergy Test – Citrus AllergiesAsheville316,694Grapefruit Allergy Test – Citrus AllergiesConcord264,492Grapefruit Allergy Test – Citrus AllergiesWilmington247,372Grapefruit Allergy Test – Citrus AllergiesHickory211,042Grapefruit Allergy Test – Citrus AllergiesGastonia194,190Grapefruit Allergy Test – Citrus AllergiesHigh Point178,800Grapefruit Allergy Test – Citrus AllergiesCary171,603Grapefruit Allergy Test – Citrus AllergiesBurlington137,096Grapefruit Allergy Test – Citrus AllergiesGreenville122,921Grapefruit Allergy Test – Citrus AllergiesJacksonville108,549Grapefruit Allergy Test – Citrus AllergiesRocky Mount61,952Grapefruit Allergy Test – Citrus AllergiesChapel Hill60,920Grapefruit Allergy Test – Citrus AllergiesHuntersville60,166Grapefruit Allergy Test – Citrus AllergiesApex58,066Grapefruit Allergy Test – Citrus AllergiesKannapolis52,173Grapefruit Allergy Test – Citrus AllergiesMooresville48,431Grapefruit Allergy Test – Citrus AllergiesWilson47,914Grapefruit Allergy Test – Citrus AllergiesWake Forest46,387Grapefruit Allergy Test – Citrus AllergiesHolly Springs40,198Grapefruit Allergy Test – Citrus AllergiesIndian Trail39,603Grapefruit Allergy Test – Citrus AllergiesSalisbury35,258Grapefruit Allergy Test – Citrus AllergiesMonroe34,464Grapefruit Allergy Test – Citrus AllergiesGoldsboro33,214Grapefruit Allergy Test – Citrus AllergiesFuquay-Varina33,135Grapefruit Allergy Test – Citrus AllergiesNew Bern31,058Grapefruit Allergy Test – Citrus AllergiesCornelius30,925Grapefruit Allergy Test – Citrus AllergiesGarner30,859Grapefruit Allergy Test – Citrus AllergiesSanford30,024Grapefruit Allergy Test – Citrus AllergiesMatthews29,417Grapefruit Allergy Test – Citrus AllergiesMorrisville28,824Grapefruit Allergy Test – Citrus AllergiesStatesville27,777Grapefruit Allergy Test – Citrus AllergiesThomasville26,941Grapefruit Allergy Test – Citrus AllergiesAsheboro26,729Grapefruit Allergy Test – Citrus AllergiesKernersville26,376Grapefruit Allergy Test – Citrus AllergiesMint Hill26,236Grapefruit Allergy Test – Citrus AllergiesClayton25,486Grapefruit Allergy Test – Citrus AllergiesLeland22,794Grapefruit Allergy Test – Citrus AllergiesShelby21,564Grapefruit Allergy Test – Citrus AllergiesCarrboro21,237Grapefruit Allergy Test – Citrus AllergiesClemmons21,032Grapefruit Allergy Test – Citrus AllergiesKinston19,888Grapefruit Allergy Test – Citrus AllergiesWaxhaw19,645Grapefruit Allergy Test – Citrus AllergiesLexington19,347Grapefruit Allergy Test – Citrus AllergiesLumberton19,186Grapefruit Allergy Test – Citrus AllergiesKnightdale18,614Grapefruit Allergy Test – Citrus AllergiesElizabeth City18,466Grapefruit Allergy Test – Citrus AllergiesHarrisburg18,415Grapefruit Allergy Test – Citrus AllergiesLenoir18,205Grapefruit Allergy Test – Citrus AllergiesBoone18,055Grapefruit Allergy Test – Citrus AllergiesHavelock17,570Grapefruit Allergy Test – Citrus AllergiesHope Mills17,421Grapefruit Allergy Test – Citrus AllergiesMorganton17,389Grapefruit Allergy Test – Citrus AllergiesMount Holly17,315Grapefruit Allergy Test – Citrus AllergiesPinehurst17,250Grapefruit Allergy Test – Citrus Allergies