Blood Testing San Antonio, TX
Patch Testing
San Antonio, TX
Find Out What’s Really Triggering Your Allergies
You’ve been sneezing through every season, reaching for antihistamines that barely take the edge off, and you still can’t name what’s setting it off. Maybe a certain food leaves you itchy or swollen and now you’re scared to eat it again. Maybe you can’t stop your medication, or your skin won’t tolerate a skin test. You’re tired of avoiding everything just in case. You want a straight answer.
Allergy blood testing at Juniper Allergy in San Antonio measures your immune system’s response to specific allergens with a single blood draw.
Dr. Amanda Trott-Gregorio will identify exactly what your body is reacting to, so you can stop avoiding everything, stop guessing, and start managing the few things that actually matter.
Meet Dr. Amanda Trott-Gregorio
Dr. Amanda Trott-Gregorio is a board-certified Allergist and Immunologist who has spent the past 10+ years in private practice in San Antonio, transforming the lives of countless patients with her warm, personable approach and genuine passion for resolving allergies.
A proud native of south Texas, she graduated from Texas A&M University in 2001 before earning her MD from St. George’s University School of Medicine, where she studied from 2003 to 2007. She went on to complete her residency at UTMB in Galveston from 2007 to 2010, followed by a prestigious Allergy and Immunology fellowship at Washington University in St. Louis from 2010 to 2012.
Insurance We Accept
Insurance We Accept
What Is Allergy Blood Testing?
Allergy blood testing, also called specific IgE testing or ImmunoCAP, measures the antibodies your immune system produces when it reacts to a specific allergen.
Unlike a skin test, which places allergens directly on or under your skin, a blood test only needs a single sample drawn from your arm. That sample is sent to an accredited lab and checked against the allergens most likely to be causing your symptoms, such as pollens, dust mites, pet dander, mold, foods, and insect venom.
It is a strong option when skin testing is not the right fit, whether that is because of a medication you take, a skin condition that gets in the way, or a history of severe reactions. There are no needles in the skin beyond the standard draw, no sitting in the clinic with patches, and no need to stop your antihistamines beforehand.
For many patients, it is the simplest way to get clear answers about both environmental and food allergies in one visit.
Could Blood Testing Be Right for You?
✓ You have ongoing sneezing, congestion, or itchy watery eyes and you do not know the trigger
✓ You take antihistamines you cannot stop long enough for a skin test
✓ You have had a severe allergic reaction and a skin test feels too risky
✓ You suspect a food allergy and want a clear answer before your next meal
✓ You have eczema or another skin condition that makes skin testing difficult to read
✓ You need to test a young child who may not sit still for skin pricks
✓ You take a medication, such as a beta blocker, that rules out skin testing
What to Expect: The Blood Testing Process
1
Initial Consultation
Our allergy specialist reviews your symptoms, medical history, and lifestyle to recommend the most appropriate testing for you.
2
Blood Draw
We collect a single blood sample right here in our San Antonio clinic, then send it to an accredited lab for precise, proven analysis.
3
Results
Your results are carefully reviewed and interpreted by our board-certified allergy specialist right here in our San Antonio clinic.
4
Your Personalized Plan
We walk you through your results and build a treatment plan personalized specifically to you.
Hear It from Our Happy Patients!
Why Choose Juniper Allergy For Blood Testing in San Antonio
Board-Certified Allergist
Our allergy specialists are board-certified in Allergy and Immunology, ensuring every patient receives the highest standard of care.
Over 10 Years of Experience
Juniper Allergy has been serving San Antonio patients for over 13 years with expert allergy and immunology care.
Individualized Care
We use modern, individualized care personalized specifically to each patient, never a one-size-fits-all approach to treatment.
Compassionate Team
At Juniper Allergy, we prioritize the relationship between doctor and patient so you always feel heard and supported.
Conditions Diagnosed By Blood Testing
Allergic Rhinitis (Hay Fever)
Year-round or seasonal sneezing, congestion, and itchy watery eyes caused by airborne triggers like pollen, dust mites, and pet dander.
Food Allergy
Reactions ranging from hives and swelling to digestive upset after eating foods such as peanuts, tree nuts, shellfish, milk, or egg.
Allergic Asthma
Wheezing, coughing, and tightness in the chest brought on or worsened by inhaled allergens, identified so triggers can be managed.
Atopic Dermatitis (Eczema)
Dry, itchy, inflamed skin that is often linked to underlying allergic sensitivities the test can help bring to light.
Insect Venom Allergy
Significant swelling or whole-body reactions after a bee, wasp, or hornet sting, where confirming the trigger guides safe next steps.
Environmental Allergy
Ongoing symptoms around cats, dogs, dust mites, or mold, narrowed down so you know exactly what to limit at home and work.
Your Allergies Won’t Settle Until You Find the Trigger
Frequently Asked Questions
How much does allergy blood testing cost in San Antonio?
Cost depends on the allergen panels needed and your insurance coverage. Most plans cover medically necessary allergy testing. Call us at (210) 888-1297 before your appointment and our team will walk you through your costs clearly.
Do I need to stop my medications before a blood test?
No. One of the biggest advantages of blood testing is that you do not need to pause antihistamines or most other medications beforehand, which makes it a good fit when stopping them is not practical.
How long does it take to get my results?
Because your sample is processed at an accredited lab, results usually come back within a few days. Dr. Trott reviews them with you and explains what each one means for your care.
Is blood testing more accurate than skin testing?
Both tests are reliable, and each has strengths. Skin testing gives fast in-clinic results, while blood testing works well when medication, a skin condition, or a history of severe reactions makes skin testing difficult. Dr. Trott will recommend the right approach for your situation.
How many allergens can be tested at once?
A single blood draw can be checked against a wide range of environmental and food allergens. Dr. Trott selects the panels based on your symptoms and history so you are testing for what actually matters to you.