Dill F277 IgE (Allergen-Specific IgE) Biomarker Testing
It measures IgE antibodies to dill to help assess allergy risk and guide next steps, with easy ordering and Quest lab access through Vitals Vault.
With Vitals Vault, you have access to a comprehensive range of biomarker tests.
A Dill F277 IgE test measures whether your immune system has made IgE antibodies that recognize dill. This is one way clinicians evaluate possible allergy to dill as a food ingredient or spice.
Because dill is often used in small amounts and mixed into foods (pickles, dressings, sauces, seasoning blends), reactions can be hard to pin on one trigger. A targeted blood test can help you and your clinician decide whether dill is a likely contributor, or whether you should look for a different cause.
Your result does not diagnose an allergy by itself. It is most useful when it is interpreted alongside your symptoms, timing of reactions, and any history of asthma, eczema, or other allergies.
Do I need a Dill F277 IgE test?
You might consider a Dill F277 IgE test if you get repeat symptoms soon after eating foods that commonly contain dill, such as hives, itching, lip or mouth tingling, throat tightness, wheezing, vomiting, or worsening eczema. It can also be helpful if you react to pickled foods or herb-heavy dishes and you are trying to separate dill from other common ingredients like mustard, celery, garlic, or vinegar.
This test can be useful when your history suggests an IgE-mediated allergy (reactions typically within minutes to a couple of hours). If your symptoms are delayed by many hours, are mainly digestive without hives or breathing symptoms, or are more consistent with intolerance, a different evaluation may fit better.
Testing is also reasonable if you have pollen allergies and notice mouth or throat itching with certain raw herbs or spices, which can happen with oral allergy syndrome (pollen-food allergy syndrome). In that situation, your clinician may interpret dill IgE as part of a broader cross-reactivity pattern.
If you have had a severe reaction, do not use this test to “prove” safety on your own. Use results to support clinician-directed care, including whether you need an epinephrine plan, avoidance guidance, or supervised food challenges.
This is a laboratory-developed, CLIA-validated allergen-specific IgE blood test; results support clinical decision-making but do not confirm allergy without symptom correlation.
Lab testing
Order Dill F277 IgE through Vitals Vault and complete your draw at a local lab location.
Schedule online, results typically within about a week
Clear reporting and optional clinician context
HSA/FSA eligible where applicable
Get this test with Vitals Vault
Vitals Vault lets you order Dill F277 IgE testing directly, then complete your blood draw at a participating lab location. This is helpful when you want a clear, documented result to bring to your clinician or to guide a focused elimination plan.
After your results post, you can use PocketMD to talk through what “sensitization” means, how to weigh your number against your reaction history, and which follow-up tests may add clarity (for example, related food or environmental allergens).
If your situation changes—such as new symptoms, pregnancy, starting allergy medications, or a suspected exposure—you can also use Vitals Vault to retest and track trends over time, rather than relying on memory or guesswork.
- Order online and complete your draw at a local lab location
- PocketMD support to help you interpret results in context
- Easy re-ordering if you and your clinician decide to retest
Key benefits of Dill F277 IgE testing
- Helps identify whether dill is a plausible trigger when reactions involve mixed foods or seasoning blends.
- Supports risk assessment for IgE-type reactions, which tend to happen quickly after exposure.
- Adds objective data to guide an elimination-and-reintroduction plan with your clinician.
- Helps differentiate “sensitization” (IgE present) from other non-IgE causes of symptoms when interpreted with your history.
- Can inform decisions about carrying emergency medication if you have had systemic reactions.
- Provides a baseline for follow-up if symptoms evolve or if you are monitoring allergy patterns over time.
- Pairs well with broader allergy testing to map cross-reactivity with pollens, herbs, or related foods.
What is Dill F277 IgE?
Dill F277 IgE is a blood test that measures allergen-specific immunoglobulin E (IgE) antibodies directed at dill. IgE is the antibody class involved in immediate-type allergic reactions, where symptoms can appear quickly after exposure.
A positive dill-specific IgE result means your immune system recognizes dill proteins and has made IgE against them. This is called sensitization. Sensitization can be clinically important, but it is not the same as a confirmed allergy, because some people have detectable IgE without having symptoms when they eat the food.
The test is most meaningful when you match it to your real-world pattern: what you ate, how much you ate, how soon symptoms started, and what symptoms occurred. Your clinician may also consider whether you have other allergies (especially pollen allergies), because cross-reactivity can sometimes contribute to milder mouth or throat symptoms.
IgE-mediated allergy vs intolerance
IgE-mediated reactions often involve hives, swelling, wheezing, throat symptoms, or vomiting, and they usually start within minutes to a couple of hours. Intolerances and non-IgE reactions can cause discomfort too, but they typically do not involve IgE antibodies and may have different timing and symptom patterns.
Why spices and herbs can be tricky
Spices are often eaten in small amounts and alongside many other ingredients, so it can be hard to identify the true trigger from symptoms alone. A targeted IgE test can narrow the list, but it still needs symptom correlation because low-level sensitization can occur without clinical reactions.
What do my Dill F277 IgE results mean?
Low or undetectable Dill IgE
A low (often reported as negative or undetectable) dill-specific IgE result makes an IgE-mediated dill allergy less likely, but it does not fully rule it out. If your reactions are convincing—especially if they are immediate and reproducible—your clinician may still consider additional evaluation, such as testing for other likely ingredients or supervised oral challenge. False negatives can happen, particularly if the true trigger is a different herb/spice or if symptoms are not IgE-driven.
In-range results (lab-specific reference)
Many labs report allergen-specific IgE on a scale where values below a cutoff are considered negative, and values above it are positive with graded “classes.” If your result is near the cutoff, interpretation depends heavily on your history because borderline results can reflect mild sensitization or background noise. In this range, your clinician may focus on whether your symptoms are consistent with allergy and whether other tests (or a careful food diary) better explain your pattern.
High Dill IgE
A higher dill-specific IgE level suggests stronger sensitization and increases the likelihood that dill could trigger symptoms, especially if you have immediate reactions after exposure. However, the number alone does not predict exactly how severe a reaction will be, and some people with higher values still tolerate the food. If you have had systemic symptoms (breathing issues, widespread hives, faintness), treat this as a prompt to review an emergency plan and avoidance strategy with your clinician.
Factors that influence Dill IgE results
Your result can be influenced by your overall atopic tendency (history of eczema, asthma, allergic rhinitis), recent exposures, and cross-reactivity with pollens or related plant proteins. Medications like antihistamines do not usually suppress blood IgE results the way they can affect skin testing, but immune-modulating therapies may affect allergy testing patterns over time. Age, pregnancy, and active allergic disease can also shift the broader immune background, which is why trends and symptom correlation matter more than a single isolated number.
What’s included
- Dill (F277) Ige
Frequently Asked Questions
What does the Dill F277 IgE test measure?
It measures allergen-specific IgE antibodies in your blood that recognize dill. This helps assess whether your immune system is sensitized to dill, which can support evaluation of an IgE-mediated allergy when matched to your symptoms.
Do I need to fast for a Dill IgE blood test?
Fasting is not typically required for allergen-specific IgE testing. If you are getting other labs at the same visit (like lipids or glucose), follow the fasting instructions for those tests.
Can antihistamines affect Dill IgE results?
Antihistamines usually do not change blood IgE results, although they can affect skin-prick testing. If you are on immune-modifying medications or biologics, ask your clinician whether timing matters for your specific situation.
If my Dill IgE is positive, does that mean I’m definitely allergic?
Not necessarily. A positive result indicates sensitization, but a true allergy diagnosis depends on whether you develop consistent symptoms with exposure. Your clinician may use your history, other allergy tests, and sometimes supervised food challenge to confirm clinical allergy.
If my Dill IgE is negative, can I safely eat dill?
A negative result lowers the likelihood of an IgE-mediated dill allergy, but it cannot guarantee safety for every person. If you have had concerning reactions, especially involving breathing symptoms or faintness, discuss reintroduction and safety planning with your clinician.
How soon after a reaction should I get tested?
You can usually test at any time because allergen-specific IgE is not a short-lived marker like histamine. If you are testing very soon after a major allergic event, your clinician may still prefer follow-up testing later for a clearer baseline and to evaluate related allergens.
Should I retest Dill IgE, and if so, when?
Retesting can be useful if your exposure pattern changes, symptoms evolve, or you and your clinician are monitoring whether sensitization is increasing or decreasing over time. Many people retest on the order of months to a year when it changes management, rather than repeating it frequently without a plan.