Serum allergy testing is a blood test that measures antibody responses to selected environmental allergens. It may be recommended for dogs or cats with a clinical history consistent with environmental allergic disease when the results will help guide an individualized immunotherapy plan.
The test is not a general screening test for every itchy pet and does not diagnose environmental allergy by itself. At Jog Lantana Animal Clinic, results are interpreted together with the patient’s history, examination findings, seasonal pattern, previous treatments, parasite control, and response to diagnostic trials.
When May Serum Allergy Testing Be Appropriate?
Serum environmental-allergy testing may be considered when a patient has recurring or persistent symptoms such as:
- Year-round or seasonal itching
- Licking or chewing the paws
- Recurring ear infections
- Repeated bacterial or yeast skin infections
- Redness affecting the face, feet, ears, abdomen, or other characteristic areas
- Symptoms that return after short-term treatment is discontinued
Before recommending testing, we generally evaluate and treat other common causes of itching, including fleas, mites, secondary infection, and possible food allergy. More than one condition may be contributing to the patient’s discomfort.
What the Test Can—and Cannot—Tell Us
The blood sample is analyzed for reactions to environmental allergens that may include pollens, grasses, weeds, trees, molds, dust mites, and other regionally relevant substances.
A positive result does not automatically prove that a particular allergen is causing your pet’s symptoms. Healthy animals may have measurable antibody responses, and not every laboratory reaction is clinically relevant. Dr. Delbene reviews the results in the context of your pet’s exposure and history to determine which findings may be meaningful.
Serum environmental-allergy testing does not diagnose food allergy. When food allergy is suspected, the appropriate diagnostic approach is a strict elimination-diet trial followed, when medically indicated, by a controlled dietary challenge.
How the Testing Process Works
- Your pet receives a dermatology evaluation and review of their medical and treatment history.
- If serum testing is appropriate, a blood sample is collected and submitted to the laboratory.
- Laboratory processing commonly takes approximately two weeks, although timing may vary.
- Dr. Delbene reviews the results and identifies findings that correspond with your pet’s clinical history and likely environmental exposure.
- If immunotherapy is recommended, a customized allergen formulation may be prepared for your pet.
Please tell us about all medications, supplements, topical products, and allergy treatments your pet is receiving. Our team will advise whether any changes are necessary before testing; do not discontinue prescribed medication without veterinary guidance.
Customized Allergen Immunotherapy
Allergen-specific immunotherapy gradually exposes the patient to carefully selected environmental allergens with the goal of changing the immune system’s response over time. Depending on the formulation and patient, immunotherapy may be administered by injection or by another prescribed method.
Immunotherapy is a long-term management strategy, not an immediate cure. Improvement usually takes time, response varies among patients, and other medications or topical treatments may still be needed—especially while therapy is beginning or during seasonal flare-ups.
Monitoring and Follow-Up
Follow-up allows us to evaluate your pet’s comfort, frequency of flare-ups, medication needs, secondary infections, and response to immunotherapy. The formulation or treatment plan may need adjustment as we learn how the individual patient responds.
Please contact us if symptoms worsen, new skin or ear problems develop, or you have difficulty administering the prescribed treatment. Consistent communication helps us make thoughtful changes rather than allowing discomfort to continue.
Testing with a Clear Purpose
At JLAC, we recommend diagnostic testing only when the results are expected to guide a meaningful medical decision. We explain what the test can tell us, what its limitations are, and how the information may change your pet’s treatment plan.
Request an Environmental Allergy Evaluation
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