Allergen Specific IgE Aspergillus Versicolor (mold) blood Biomarker Testing
It measures IgE antibodies to Aspergillus versicolor to help assess mold allergy risk, with convenient ordering and Quest lab draw access via Vitals Vault.
With Vitals Vault, you have access to a comprehensive range of biomarker tests.
This test looks for allergen-specific IgE antibodies your immune system may make to Aspergillus versicolor, a type of indoor mold. A positive result can support the idea that your symptoms are being triggered by exposure, but it does not prove where the mold is or how much you are exposed to.
Allergy testing is most useful when it answers a practical question: whether avoiding a trigger, changing your environment, or adjusting treatment is likely to help. Your result matters most when it is interpreted alongside your symptoms, timing of exposure, and other allergy markers.
Do I need a Allergen Specific IgE Aspergillus Versicolor test?
You might consider this test if you get repeat symptoms that behave like allergies—such as sneezing, runny or stuffy nose, itchy eyes, cough, or wheeze—and they are worse in certain buildings, rooms, or seasons. It can also be helpful if you notice symptoms after dampness, water damage, musty odors, or visible mold, especially when symptoms improve away from that environment.
This test can be a good fit if you cannot stop antihistamines long enough for skin testing, if you have eczema or sensitive skin, or if you prefer a blood test approach. It is also commonly used when you and your clinician are trying to narrow down which indoor allergens are most relevant so you can focus your avoidance plan.
You may not need this specific mold test if your symptoms are clearly explained by a different trigger (for example, a known pollen allergy with classic seasonal timing) or if your main concern is infection rather than allergy. Testing supports clinician-directed care and planning, but it is not a standalone diagnosis of “mold illness” or a substitute for an environmental inspection when that is indicated.
This is typically a CLIA-validated allergen-specific IgE immunoassay; results should be interpreted with your symptoms and clinical history rather than used as a diagnosis by itself.
Lab testing
Order Aspergillus versicolor allergen-specific IgE through Vitals Vault.
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 allergen-specific IgE testing without needing a separate doctor’s visit just to access the lab. You can choose this targeted Aspergillus versicolor IgE test when you already have a strong suspicion about an indoor mold trigger, or you can use it as a focused follow-up after broader allergy testing.
After your results post, PocketMD can help you make sense of what “detectable” versus “higher” IgE means for you, what questions to bring to your clinician, and what companion tests may add clarity (such as total IgE or other indoor mold IgE markers). If you are tracking a change—like moving homes, remediation, or starting allergy treatment—you can also use Vitals Vault to retest on a timeline that matches your plan.
Because allergy results are easiest to act on when they are organized, you can keep your lab history in one place and compare trends over time rather than relying on a single snapshot.
- Order online and complete your blood draw through the Quest network
- Clear, patient-friendly results view with downloadable lab report
- PocketMD support to help you plan next steps and retest timing
Key benefits of Allergen Specific IgE Aspergillus Versicolor testing
- Helps identify whether your immune system is sensitized to Aspergillus versicolor (a common indoor mold).
- Supports a more targeted avoidance plan when symptoms seem tied to damp or musty indoor environments.
- Can clarify whether mold is a plausible trigger when symptoms overlap with colds, asthma, or chronic sinus issues.
- Offers an option when skin testing is impractical because of medications, eczema, or high skin reactivity.
- Helps you and your clinician decide whether broader indoor allergen testing is worth adding.
- Provides a baseline you can compare if you change environments, complete remediation, or start allergy treatment.
- Pairs well with PocketMD guidance so you can interpret results in context instead of guessing from a number alone.
What is Allergen Specific IgE Aspergillus Versicolor?
Allergen-specific IgE is a type of antibody your immune system can produce when it becomes sensitized to a particular allergen. In this test, the lab measures IgE that binds to proteins from Aspergillus versicolor, a mold that can be found indoors, especially in damp areas.
A detectable or elevated result means your immune system recognizes this allergen and has the potential to trigger allergy-type inflammation after exposure. However, sensitization is not the same as clinical allergy. Some people have measurable IgE but few symptoms, while others have strong symptoms with only modest IgE.
Your clinician typically interprets this result alongside your symptom pattern (when it happens, where it happens, and what improves it), your history of asthma or allergic rhinitis, and related testing such as total IgE or other allergen-specific IgE results.
How this differs from “mold toxicity” testing
This is an allergy test, not a toxin test. It does not measure mycotoxins, it does not identify the location of mold in your home, and it does not diagnose chronic inflammatory conditions. It answers a narrower question: whether your immune system shows IgE sensitization to this specific mold.
Blood test vs. skin testing
Skin testing measures immediate skin reactivity to allergens, while this blood test measures circulating IgE antibodies. Blood testing is useful when you cannot stop antihistamines, when skin testing is not available, or when you want a lab value you can trend over time. Either approach still requires symptom correlation to be meaningful.
What do my Allergen Specific IgE Aspergillus Versicolor results mean?
Low or undetectable Aspergillus versicolor IgE
A low or undetectable result makes an IgE-mediated allergy to Aspergillus versicolor less likely. It does not completely rule out mold-related symptoms, because your symptoms could be driven by a different mold, a non-IgE mechanism (irritant effects), or another condition such as chronic sinus inflammation. If your history strongly suggests an indoor trigger, your clinician may look at a broader mold panel or other indoor allergens.
In-range / negative (no sensitization detected)
Most labs report a “negative” range where sensitization is not detected. In that situation, the most useful next step is often to revisit the exposure story: when symptoms occur, whether they improve away from the environment, and what other triggers fit better. If you are already treating allergies, a negative result can help you avoid over-focusing on this specific mold and instead prioritize the allergens that are positive or most consistent with your symptoms.
High / positive Aspergillus versicolor IgE
A positive result means you are sensitized to Aspergillus versicolor and exposure could contribute to symptoms like nasal congestion, sneezing, cough, or asthma flares. Higher values generally increase the likelihood of clinical relevance, but the number alone does not predict severity, and “low-positive” results can still matter if your exposure is frequent. Your clinician may interpret this alongside other mold IgE results, total IgE, and your respiratory history to decide on avoidance steps and treatment.
Factors that influence allergen-specific IgE results
Timing and exposure patterns matter: ongoing indoor exposure can keep IgE detectable, while reduced exposure over time may lower levels. Cross-reactivity can occur, meaning IgE may bind to similar proteins from other molds, which can blur the line between a truly specific trigger and a broader mold sensitization pattern. Age, atopic conditions (like eczema or asthma), and overall allergic tendency can raise the chance of positive results. Medications like antihistamines do not typically suppress blood IgE levels the way they can affect skin testing, but immune-modulating therapies and major health changes can influence results over time.
What’s included
- Allergen Specific Ige Aspergillus Versicolor*
Frequently Asked Questions
What does an Aspergillus versicolor IgE test measure?
It measures allergen-specific IgE antibodies in your blood that bind to Aspergillus versicolor. This helps assess whether you are sensitized to that mold and whether exposure could be contributing to allergy-type symptoms.
Do I need to fast before an allergen-specific IgE blood test?
Fasting is usually not required for allergen-specific IgE testing. If you are combining this test with other labs that do require fasting, follow the instructions for the full order.
Can antihistamines affect Aspergillus IgE blood test results?
Antihistamines can interfere with skin testing, but they generally do not meaningfully lower blood allergen-specific IgE levels. If you are on immune-modulating medications or biologics, ask your clinician how they may affect interpretation over time.
What is a normal range for mold-specific IgE (kU/L)?
Labs typically report a reference interval where results below a certain cutoff are considered negative, and results above it are considered positive. The exact cutoffs and “class” categories can vary by lab, so it is best to interpret your value using the reference range shown on your report.
If my result is positive, does that prove I have mold in my home?
No. A positive result shows immune sensitization, not the location or amount of mold exposure. If your symptoms and history suggest an indoor source, environmental assessment and practical moisture control steps are often more informative than relying on the blood test alone.
When should I retest allergen-specific IgE to mold?
Retesting is most useful after a meaningful change, such as moving, completing remediation, or changing allergy/asthma treatment. Many people wait several months because IgE levels usually shift gradually, and symptom tracking often provides earlier feedback than the number alone.
What other tests are helpful alongside this one?
Common companions include total IgE, other indoor mold-specific IgE tests, and indoor allergen testing for dust mites, pet dander, or cockroach if those exposures fit your symptoms. If asthma is part of the picture, your clinician may also consider spirometry or inflammation markers based on your case.