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Quest Diagnostics

Allergy & asthma

Identify the cause of patient symptoms for more effective treatment

Allergies, respiratory infections, and asthma often present with similar symptoms, making them difficult to differentiate. Being able to rule in or rule out allergies as the cause of your patients’ symptoms can help inform better treatment decisions and improve patient outcomes.

From individual allergen tests and component testing to regional environmental allergy test panels, Quest offers a comprehensive range of ImmunoCAP® IgE blood allergy tests to meet the full spectrum of patient needs.

Gain additional allergy insights with reflex to component testing

Helping you target allergens to protect and improve lives

Allergies affect tens of millions of adults and children in the United States. According to the CDC, over 19 million adults and over 5 million children in the US suffer from seasonal allergies (hay fever), and over 4.5 million children have food allergies.1

Allergy testing can help your patient know what exposures to avoid, and just as important, what exposures are safe. The ImmunoCAP IgE blood test from Quest Diagnostics makes it possible to easily identify allergen-specific triggers, for improved patient management and outcomes.

For the patient in this video, a simple ImmunoCAP allergy test was the key to controlling his allergies without limiting his lifestyle.

Understanding the allergy-asthma connection

Research shows that allergy is a risk factor for asthma,2 as exposure to allergens can increase asthma symptoms and trigger attacks. The CDC recommends allergy testing for patients with asthma to help close gaps in care and mitigate risk for other respiratory illnesses.3

Identifying your patients’ allergy triggers with ImmunoCAP supports better asthma management and control for improved health outcomes and fewer office visits and hospitalizations for your patients.

A comprehensive range of testing

Get region-specific allergen insights

Upper respiratory disorders (URDs), including rhinitis, sinusitis, and allergic rhinitis may be due to viruses, bacteria, or environmental allergens. A definitive diagnosis is essential to determine appropriate treatment.

ImmunoCAP is an IgE blood test that helps identify likely allergens. Regional profiles combine the most common and significant environmental triggers based on geography, offering 18 allergy profiles that accommodate patients across the US. ImmunoCAP testing also offers the flexibility of adding or removing allergens based on your patient's needs.

Respiratory environmental/regional allergen tests:
  • Animals
  • Regional profiles
  • Insects
  • House dust and dust mites

 

  • Mold
  • Weed
  • Grass
  • Tree
Select your region to download the regional respiratory allergy profile for your area:
View all respiratory environmental/regional allergen tests

Differentiate sensitization from a true food allergy

Allergen components—in conjunction with whole-allergen test results—help you better diagnose allergies, allowing you to prepare more comprehensive management plans.

Allergen Component Testing (ACT), which measures specific IgE by blood test, is the first step in discovering the likelihood of a systemic reaction, providing you the information you need to prescribe necessary precautions for your patients.

Food allergen tests:
  • Tree nuts and components: cashew, brazil, hazelnuts, walnuts
  • Peanuts and components
  • Milk and dairy allergens and components
  • Fish and shellfish
  • Egg and component
  • Fruits and vegetables
  • Grain allergens
  • Spice allergens
  • Meats
  • Soy
Read more about component testing for food allergies
See the full range of available food allergen tests

An accurate diagnosis can save a life

For some patients, a bite or sting from an insect is not only painful—it can be life-threatening. Individual tests are available to target specific allergens, as well as the Allergy Insect Venom Panel, which tests for IgE against honey bees, wasps, hornets, yellow jackets, and fire ants.

See the full range of available insect and venom allergen tests

Know the cause to prevent the onset of allergic symptoms

Many different substances can trigger allergies in sensitive individuals, including latex, mold spores, and more. Individual tests are often the most accurate way to identify the allergen and make the right diagnosis.

See the full range of available biologics and occupational allergen tests

Identify the source of symptoms to improve patient health

With animal sensitization increasing in the US and dog and cat allergies on the rise worldwide, it’s important to accurately diagnose and treat patients to help reduce symptoms and complications from exposure.4

ImmunoCAP offers a full range of animal allergen testing to help you diagnose pet or other animal allergies and allow you to prepare a more comprehensive management plan.

Animal allergen tests:
  • Cat*
  • Chicken
  • Cow
  • Dog*
  • Duck
  • Goat
  • Goose
  • Guinea pig
  • Hamster
  • Horse*
  • Mouse
  • Parrot/parakeet
  • Pigeon
  • Rabbit
  • Rat
  • Sheep
  • Swine

*component testing available

Read more about component testing for furry pet allergies
See the full range of available animal allergen tests

Convenient allergen profiles

Quest offers a wide variety of allergy profiles including profiles that cover the most common and significant respiratory allergy triggers by region, profiles for children and adults, and food-only profiles to obtain more targeted allergen insights.

Allergen profiles:
  • Childhood allergy profile
  • Adult food allergy profile
  • Regional respiratory allergy profiles
See the full range of available allergen profile tests

NEW LIVE WEBINAR

Clinical blind spots: Alpha-Gal, Asthma, and COPD in 2026

Understanding Alpha-gal syndrome and navigating the new asthma and current COPD HEDIS metrics

Gain practical, evidence-based insights to help you recognize and evaluate patients with suspected alpha-gal syndrome while learning how to successfully navigate the evolving asthma and COPD quality measures. We'll also discuss the growing role of allergic phenotyping and trigger identification in improving patient outcomes and supporting quality care.

Learning objectives:

  • Recognize the clinical presentation and diagnostic approach to alpha-gal syndrome
  • Understand how allergic phenotyping and identification of allergic triggers can improve diagnosis, treatment selection, and patient outcomes in asthma and COPD
  • Apply practical strategies to support quality measure performance while delivering personalized respiratory care
  • Build confidence in results interpretation for comprehensive allergy testing

 

You have 3 opportunities to join us for this innovative talk. Please select and register for the following times: 

  • Tuesday, October 6 at 12:30 PM EST: REGISTER
  • Friday, October 9 at 3:00 PM EST: REGISTER
  • Wednesday, October 14 at 1:00 PM EST: REGISTER
Dandelion seeds in the morning sunlight blowing away across a fresh green background

The power of Quest

Access to medical experts

We are committed to helping you deliver the best possible care to your patients through extended support and collaboration with expert medical specialists. That’s why Quest has over 600 MDs, PhDs, and genetic counselors across the country who are available for consultations to help advise you on test selection and results interpretation.

Better patient experience

With access to over 2,250 Patient Service Centers, a single allergy blood test eliminates the need to stop medications for testing purposes. Blood testing also avoids the potential discomfort associated with a positive reaction that may occur from skin testing.

Customized allergen profiles

Regional allergen profiles focus on the environmental allergens that your patient is exposed to, helping identify the cause of symptoms quickly and efficiently. A single blood draw tests for the most common environmental and food allergens in each geographic region.

Quanum® electronic health record

Spend more time with patients and less time clicking with our cloud-based EHR that offers dynamic and secure access to patient information anytime, anywhere. This powerful and fully mobile solution lets you easily manage labs, ePrescribe, submit prior authorizations, and do so much more—right from the record.

References

 

  1. CDC National Center for Health Statistics. Allergy and hay fever. Updated March 1, 2021. Accessed September 6, 2021. https://www.cdc.gov/nchs/fastats/allergies.htm
  2. Nelson HS, Allergen and irritant control: importance and implementation. Clin Cornerstone. 1998:1(2):57-68. doi:10.1016/s1098-3597(98)80006-9
  3. CDC. Allergy testing for persons with asthma: frequently asked questions. Accessed September 4, 2020. https://www.cdc.gov/asthma/pdfs/AA_Fact_Sheet.pdf doi: 10.4168/aair.2018.10.2.97  
  4. Chan SK, Leung DYM. Dog and cat allergies: current state of diagnostic approaches and challenges. Allergy Asthma Immunol Res. 2018;10(2):97-105. doi:10.4168/aair.2018.10.2.97

Ready to learn more about Quest Diagnostics allergy testing solutions?

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Allergist component testing guide

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Quest® is the brand name used for services offered by Quest Diagnostics Incorporated and its affiliated companies. Quest Diagnostics Incorporated and certain affiliates are CLIA-certified laboratories that provide HIPAA-covered services.  Other affiliates operated under the Quest® brand, such as Quest Consumer Inc., do not provide HIPAA-covered services. 

 

Quest®, Quest Diagnostics®, any associated logos, and all associated Quest Diagnostics registered or unregistered trademarks are the property of Quest Diagnostics. All third-party marks—® and ™—are the property of their respective owners. © 2026 Quest Diagnostics Incorporated. All rights reserved. Image content features models and is intended for illustrative purposes only. May include AI-generated and/or AI-modified imagery.