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Mid-Atlantic · Grapefruit Allergy Test – Citrus Allergies

Grapefruit Allergy Test – Citrus Allergies in Maryland

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 Maryland

Here is what you need before ordering and completing the Grapefruit Allergy Test – Citrus Allergies in MD. 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, including MD. 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 Maryland communities

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

Baltimore2,205,092Grapefruit Allergy Test – Citrus AllergiesBel Air South222,834Grapefruit Allergy Test – Citrus AllergiesHagerstown194,602Grapefruit Allergy Test – Citrus AllergiesFrederick175,032Grapefruit Allergy Test – Citrus AllergiesWaldorf119,442Grapefruit Allergy Test – Citrus AllergiesSalisbury108,982Grapefruit Allergy Test – Citrus AllergiesColumbia105,086Grapefruit Allergy Test – Citrus AllergiesGermantown90,235Grapefruit Allergy Test – Citrus AllergiesSilver Spring82,472Grapefruit Allergy Test – Citrus AllergiesEllicott City74,432Grapefruit Allergy Test – Citrus AllergiesEldersburg70,639Grapefruit Allergy Test – Citrus AllergiesGlen Burnie69,739Grapefruit Allergy Test – Citrus AllergiesGaithersburg68,827Grapefruit Allergy Test – Citrus AllergiesRockville67,095Grapefruit Allergy Test – Citrus AllergiesDundalk66,426Grapefruit Allergy Test – Citrus AllergiesBethesda66,294Grapefruit Allergy Test – Citrus AllergiesTowson59,014Grapefruit Allergy Test – Citrus AllergiesBowie58,113Grapefruit Allergy Test – Citrus AllergiesSevern53,955Grapefruit Allergy Test – Citrus AllergiesAspen Hill53,850Grapefruit Allergy Test – Citrus AllergiesWheaton51,836Grapefruit Allergy Test – Citrus AllergiesNorth Bethesda50,695Grapefruit Allergy Test – Citrus AllergiesPotomac46,891Grapefruit Allergy Test – Citrus AllergiesOdenton43,488Grapefruit Allergy Test – Citrus AllergiesCatonsville42,789Grapefruit Allergy Test – Citrus AllergiesWoodlawn42,053Grapefruit Allergy Test – Citrus AllergiesEssex40,710Grapefruit Allergy Test – Citrus AllergiesAnnapolis40,581Grapefruit Allergy Test – Citrus AllergiesClinton39,925Grapefruit Allergy Test – Citrus AllergiesSeverna Park39,108Grapefruit Allergy Test – Citrus AllergiesChillum36,428Grapefruit Allergy Test – Citrus AllergiesOlney35,815Grapefruit Allergy Test – Citrus AllergiesRandallstown35,641Grapefruit Allergy Test – Citrus AllergiesOwings Mills35,170Grapefruit Allergy Test – Citrus AllergiesCollege Park34,961Grapefruit Allergy Test – Citrus AllergiesMontgomery Village34,489Grapefruit Allergy Test – Citrus AllergiesPikesville33,549Grapefruit Allergy Test – Citrus AllergiesPasadena31,583Grapefruit Allergy Test – Citrus AllergiesBel Air North30,969Grapefruit Allergy Test – Citrus AllergiesParkville30,783Grapefruit Allergy Test – Citrus AllergiesMilford Mill30,685Grapefruit Allergy Test – Citrus AllergiesMiddle River30,606Grapefruit Allergy Test – Citrus AllergiesCarney29,873Grapefruit Allergy Test – Citrus AllergiesCrofton29,812Grapefruit Allergy Test – Citrus AllergiesLaurel29,438Grapefruit Allergy Test – Citrus AllergiesPerry Hall29,165Grapefruit Allergy Test – Citrus AllergiesSouth Laurel27,998Grapefruit Allergy Test – Citrus AllergiesReisterstown27,917Grapefruit Allergy Test – Citrus AllergiesIlchester27,513Grapefruit Allergy Test – Citrus AllergiesClarksburg27,354Grapefruit Allergy Test – Citrus AllergiesLochearn26,995Grapefruit Allergy Test – Citrus AllergiesSuitland26,375Grapefruit Allergy Test – Citrus AllergiesFort Washington25,840Grapefruit Allergy Test – Citrus AllergiesFairland25,324Grapefruit Allergy Test – Citrus AllergiesArnold25,056Grapefruit Allergy Test – Citrus AllergiesEdgewood25,004Grapefruit Allergy Test – Citrus AllergiesGreenbelt24,602Grapefruit Allergy Test – Citrus AllergiesLandover24,508Grapefruit Allergy Test – Citrus AllergiesNorth Potomac24,449Grapefruit Allergy Test – Citrus AllergiesNorth Laurel24,233Grapefruit Allergy Test – Citrus Allergies