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Grapefruit Allergy Test

This Grapefruit Allergy Test uses a blood sample to determine whether or not you are allergic to grapefruits.

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Test Preparation:
Testing Method:
Blood draw

This Grapefruit Allergy Test uses a blood sample to determine whether or not you are allergic to grapefruits. Those with grapefruit allergies are prone to rashes, watery eyes, wheezing, and in extreme cases, anaphylaxis. In many cases, those with grapefruit allergies can be allergic to other citrus fruits as well. For this reason, we suggest covering multiple bases at once (and saving money) with our Citrus Fruit Allergy Panel. To identify a specific grapefruit allergy, order the Priority Lab Testing Grapefruit Allergy Test today.

How Our Grapefruit Allergy Tests Works

To find out of you have a grapefruit allergy, place an order for the grapefruit allergy panel. Then, proceed to visit any of our 4000+ facilities nationwide for sample collection. You can stop by at any time as it’s not necessary to book an appointment.

One of our certified staff members will use the prick method to take a sample of your blood. While the process may seem intimidating, it’s simple, fast, and painless. So, it’ll only take a few minutes from when you enter our facility to when you leave. Therefore, no need to worry about scheduling your day as you can squeeze in the test anytime.

After that, your sample will be tested in a CLIA-certified lab. And within 24 to 72 hours, you’ll have your grapefruit allergy test results.

Common Grapefruit Allergy Symptoms

An oversensitive immune system causes grapefruit allergy. When you have a grapefruit allergy, your body mistakes grapefruit proteins for harmful substances. So, your immune system overreacts when you eat grapefruit or come into contact with the fruit.

This causes your body to release histamines and other chemicals that lead to the symptoms of an allergic reaction.

The symptoms of a grapefruit allergy can range from mild to severe. They can also differ depending on the person and their reaction. For example, some people may only experience hives, while others may have anaphylaxis.

Mild symptoms:

  • Hives 
  • Itching 
  • Nasal congestion 
  • Runny nose 
  • Watery eyes 
  • Sneezing 

Moderate symptoms:

  • Wheezing 
  • Shortness of breath 
  • Difficulty swallowing 
  • Tightening of the throat 
  • Nausea 
  • vomiting 
  • Diarrhea 
  • Abdominal cramps 
  • Dizziness or lightheadedness 

Anaphylactic shock is a severe and potentially life-threatening reaction to grapefruit allergy. It results in severe symptoms such as:

  • Tightening of the chest 
  • Severe shortness of breath 
  • Wheezing 
  • Swelling of the throat or tongue 
  • Heart palpitations 
  • Nausea 
  • Vomiting 
  • Diarrhea 
  • Loss of consciousness 

Anaphylaxis requires immediate medical attention as it can be fatal. If you think you or someone else is experiencing anaphylaxis, call 911 right away.

Grapefruit Allergy Test vs. Berry Fruit Allergy Test

While grapefruit allergy is not as common as other fruit allergies, it can still be a bothersome condition. And like any allergy, it’s important to get tested to know if you have it and take the necessary precautions.

The good news is that we offer both a grapefruit allergy test at Priority Lab Testing and a berry fruit allergy test. This way, you can get all the information you need about your allergies in one place.

The berry fruit allergy panel tests for reactions to common berries. These include strawberries, raspberries, and blueberries. So, if you’re someone who loves their berries, this is the test for you.

On the other hand, the grapefruit allergy test is designed specifically to test for reactions to grapefruit. This includes both the fruit itself as well as grapefruit juice.

If you’re unsure which test is right for you, our team of experts can help. We’ll take into account your symptoms, medical history, and lifestyle to make the best recommendations.

How to Interpret Your results

At Priority Lab Testing, we strive to make everything easy for you. That’s why beyond the quick sample-taking process, we present results in an easy-to-understand manner. 

On the results page, there’s a ‘reference range’ which shows the extent of your allergic reaction. You’ll also see a ‘result flag’ that points to the numerical value of your sensitivity to grapefruit. Furthermore, the ‘flag’ column will be marked as either abnormal/reactive or normal/non-reactive.


  • The only way to know if you’re allergic to grapefruit is to get tested. Allergy tests can be done at Priority Lab Testing.

  • The symptoms of a grapefruit allergy can range from mild to severe, including hives, itching, nasal congestion, runny nose, watery eyes, sneezing, wheezing, shortness of breath, difficulty swallowing, tightening of the throat, nausea, vomiting, diarrhea, abdominal cramps, dizziness or lightheadedness.

  • Currently, there is no cure for grapefruit allergy. Therefore, avoiding grapefruit and grapefruit products is the only way to manage the condition.