Allergy Testing in Ashburn, VA
IgE-based blood allergy testing for environmental and food allergens.
Walk-in price
Allergy Testing
- Blood sample
- Results in 3–5 business days
- Doctor’s order included
- HSA / FSA accepted
42775 Generation Drive, Ashburn, VA 20147
What this test screens for
Understanding the Allergying
Our Allergy Testing measures IgE antibodies in your blood to identify specific environmental and food allergens. IgE is the antibody class responsible for immediate allergic reactions — hives, itching, sneezing, wheezing, and in severe cases anaphylaxis. The test is $249 in our Ashburn lab and is a single blood draw; no skin pricks, no antihistamine washout.
There are three different panels to choose from. The environmental allergy panel covers Northern Virginia pollens, tree and grass species, mold spores, animal dander, and dust mites — useful for seasonal or year-round respiratory symptoms. The food allergy panel covers the most common food allergens (peanuts, tree nuts, dairy, egg, soy, wheat, shellfish, fish). Combination panels are available when you want both.
IgE allergy testing is different from food sensitivity (IgG) testing — they answer different questions. IgE measures immediate, classic allergic responses. IgG measures delayed, often milder reactions and is useful for investigating chronic symptoms (digestion, brain fog, skin issues) that do not fit a typical allergy pattern. We offer food sensitivity testing as a separate $249 panel.
Why people get this test
- Seasonal allergy symptoms (sneezing, congestion, itchy eyes) that you want to confirm and target
- Year-round respiratory symptoms — to identify dust mite, mold, or animal dander triggers
- Suspected food allergy after a reaction (hives, swelling, GI distress, anaphylaxis)
- Pre-pregnancy or pediatric allergy screening
- Workup before starting allergy immunotherapy (shots or sublingual drops)
- Confirming or ruling out an allergy without doing a skin-prick test
What to expect
From check-in to results — what your visit looks like
Most visits take under 15 minutes. Here’s the full arc, start to finish.
How to prepare
No fasting, no medication changes. Unlike skin-prick allergy testing, our blood-based IgE testing is not affected by antihistamines — you can continue Allegra, Zyrtec, Claritin, Benadryl, or any other antihistamine right up to the day of the draw. Bring photo ID and, if you have one, a brief symptom diary (what reacts when) — useful context if you discuss results with an allergist later.
During your visit
A single small blood draw — typically two tubes for a combined panel, one tube for a single panel. Completed in under 5 minutes. Pediatric blood draws are offered at our Ashburn lab subject to phlebotomist availability that day — call ahead so we can confirm staffing and plan for the right tube sizes.
Getting your results
Allergy panel results post to your secure online portal in 3 to 5 business days. The report lists each allergen with a positive or negative classification and a numeric IgE value that helps clinicians interpret severity (higher numbers generally mean stronger sensitization). Allergy testing on its own does not diagnose — discuss results with a primary-care provider or allergist for clinical interpretation and treatment planning.
Confidential
Your results never go through your insurance carrier.
Transparent
Price you see is price you pay.
Fast
Most results in 24–72 hours through our portal.
Doctor’s order
Included as part of every visit. No referral needed.
FAQ
Allergy Testing — what people ask
Specific questions about the allergy testing. For anything not covered, call 571-500-7030.
What is the difference between allergy testing and food sensitivity testing?
Allergy testing (IgE) measures immediate-reaction antibodies behind classic allergic responses — hives, itching, anaphylaxis. Food sensitivity testing (IgG) measures delayed-reaction antibodies and is useful for investigating chronic, milder symptoms that do not fit a classic allergy pattern. We offer both as separate $249 panels.
Do I need to stop antihistamines before an allergy blood test?
No. Blood-based IgE allergy testing is not affected by antihistamines — unlike the skin-prick tests an allergist might perform. You can continue Allegra, Zyrtec, Claritin, Benadryl, or other antihistamines normally before your draw.
Can children get allergy tested at your Ashburn lab?
Allergy blood testing is age-appropriate for children, and the single needle stick is often gentler than a multi-prick skin test. Pediatric draw capacity varies day to day — call ahead so we can confirm staffing for a pediatric phlebotomist and the right tube sizes for your child.
You might also need
Other general health tests
Other tests our Ashburn neighbors commonly add to a visit.
TB Test (PPD / QuantiFERON)
Tuberculosis screening for school, employment and healthcare requirements. PPD skin test and QuantiFERON blood test both available.
COVID-19 RT-PCR Test
Highly accurate PCR COVID-19 swab — results in 1–2 hours.
Food Sensitivity Testing
IgG-based food sensitivity panel screening for delayed reactions to common foods.
Before you walk in
Helpful guides
Quick, plain-English answers to the questions Ashburn neighbors ask most often before booking.
What is a TB skin test? (PPD / Mantoux test)
A two-visit screening test for tuberculosis exposure — small forearm injection read 48 to 72 hours later.
Read the guidePPD vs QuantiFERON TB test — which should you choose?
PPD is the long-standing standard but needs two visits. QuantiFERON is single-visit and preferred for BCG-vaccinated patients.
Read the guideService area
We serve these communities
We serve Ashburn and the surrounding Loudoun and Fairfax County communities from our Goose Creek Village lab.
Book your allergy testing today.
Walk in or reserve a time online. Most visits take under 15 minutes.