Alternaria Alternata Mold Allergy Blood Test

What is Alternaria Alternata Allergy?

Alternaria Alternata allergy is an immune system hypersensitivity to spores from the Alternaria Alternata mold species. It is caused by exposure to airborne spores from this common outdoor mold found on plants, soil, and decaying organic matter, which triggers the production of IgE antibodies. The Respiratory Allergy Profile Region XVII is the most important test for diagnosis because it measures specific IgE antibodies to Alternaria Alternata and other regional allergens.

RECOMMENDED TEST Respiratory Allergy Profile Region XVII: CA (northwest), OR (west), WA (west)
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What causes Alternaria Alternata allergy?

Alternaria Alternata allergy is caused by inhaling or contacting spores from the Alternaria Alternata mold, a widespread outdoor fungus that thrives on plants, soil, and decomposing organic material. When you breathe in these microscopic spores, your immune system mistakenly identifies them as harmful invaders and produces IgE antibodies to fight them off. This immune response triggers the release of histamine and other chemicals that cause classic allergy symptoms like sneezing, runny nose, and itchy eyes.

What is the best test for Alternaria Alternata allergy?

The Respiratory Allergy Profile Region XVII is the most important test for Alternaria Alternata allergy because it measures specific IgE antibodies in your blood that react to this particular mold species. This comprehensive panel tests for Alternaria Alternata sensitivity along with other common allergens in the western United States, helping identify if this specific mold is triggering your symptoms. The blood test detects the presence and level of IgE antibodies, confirming whether your immune system has developed an allergic response to Alternaria Alternata spores, which is essential for developing an effective treatment plan.

When should I get tested for Alternaria Alternata allergy?

You should get tested if you experience persistent allergy symptoms like sneezing, runny nose, itchy and watery eyes, or skin rashes that worsen during late summer and fall when mold spore counts are highest. Consider testing if your symptoms flare up after being outdoors, working in the garden, raking leaves, or in damp environments where mold thrives. Testing is especially important if over-the-counter allergy medications are not providing relief or if you want to identify the specific allergen causing your symptoms so you can take targeted avoidance measures.

What are the symptoms of Alternaria Alternata allergy?
Alternaria Alternata allergy symptoms include sneezing, runny or stuffy nose, itchy and watery eyes, throat irritation, and coughing. You might also experience skin reactions like rashes, hives, or eczema flare-ups after direct contact with the mold spores. People with asthma may notice increased wheezing, chest tightness, and difficulty breathing when exposed to these spores. Symptoms typically worsen during late summer through fall when outdoor mold spore concentrations peak, and they may also increase in damp, humid conditions where mold grows more readily.
Who is at risk for Alternaria Alternata allergy?
People with a family history of allergies, asthma, or eczema are at higher risk for developing Alternaria Alternata allergy. Those who spend significant time outdoors, work in agriculture, gardening, or landscaping have increased exposure to mold spores and greater risk of sensitization. Individuals living in humid climates or areas with high outdoor mold counts are more likely to develop this allergy. Children and young adults are particularly susceptible, as mold allergies often develop during childhood, though they can emerge at any age.
What happens if Alternaria Alternata allergy is left untreated?
Untreated Alternaria Alternata allergy can lead to chronic sinusitis, persistent nasal congestion, and recurring sinus infections that significantly impact your quality of life. For people with asthma, ongoing exposure without proper management can trigger more frequent and severe asthma attacks, potentially leading to permanent airway damage and decreased lung function. Continuous allergic inflammation can also cause sleep disturbances, fatigue, difficulty concentrating, and increased susceptibility to other respiratory infections. Long-term exposure may worsen existing allergic conditions and make you more sensitive to other environmental allergens.
Can Alternaria Alternata allergy be diagnosed with a blood test?
Yes, Alternaria Alternata allergy can be accurately diagnosed with a blood test that measures specific IgE antibodies to this mold species. The blood test is convenient, requires only a simple blood draw, and does not carry the risk of triggering an allergic reaction during testing like skin prick tests can. Blood testing is particularly useful if you are taking antihistamines or other medications that might interfere with skin testing, or if you have skin conditions that make skin testing difficult. Results typically show the level of IgE antibodies present, which helps confirm the diagnosis and assess the severity of your allergy.
How is Alternaria Alternata allergy treated?
Alternaria Alternata allergy is treated primarily through avoidance strategies combined with medications to control symptoms. Antihistamines help relieve sneezing, itching, and runny nose, while nasal corticosteroid sprays reduce inflammation and congestion. Your doctor may recommend decongestants for short-term relief or leukotriene modifiers for ongoing symptom management. For severe allergies or those not well-controlled with medications, immunotherapy (allergy shots or sublingual tablets) can help desensitize your immune system to the allergen over time. Managing asthma symptoms with inhalers and avoiding mold exposure are also crucial parts of treatment.
How can I prevent Alternaria Alternata allergy symptoms?
You can prevent Alternaria Alternata allergy symptoms by limiting outdoor activities during peak mold season in late summer and fall, especially on windy days when spore counts are highest. Keep windows closed during high mold count periods and use air conditioning with HEPA filters to clean indoor air. Avoid activities like raking leaves, mowing lawns, or working with compost that stir up mold spores, or wear an N95 mask when these tasks are unavoidable. Monitor daily mold count forecasts and plan outdoor activities when counts are lower, and shower and change clothes after spending time outdoors to remove spores from your body and hair.
What natural remedies help with Alternaria Alternata allergy?
Natural remedies that may help with Alternaria Alternata allergy include using saline nasal rinses to flush out allergens and reduce nasal inflammation. Local honey may provide some relief by potentially desensitizing your immune system to local pollens and molds, though evidence is limited. Quercetin, a natural antihistamine found in foods like onions, apples, and green tea, may help stabilize mast cells and reduce histamine release. Using a dehumidifier to keep indoor humidity below 50 percent helps prevent mold growth indoors, and adding air purifiers with HEPA filters to bedrooms can reduce airborne spore exposure while you sleep.
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Demo results
Immunoglobulin E (Total IgE) 285 IU/mL
Demo results
Normal < 150 Elevated ≄ 150
285 IU/mL

What this means

Your total IgE level is elevated, which indicates your immune system is producing higher amounts of allergy antibodies. This is common in people with environmental allergies and suggests you're sensitized to one or more allergens tested in this panel. Elevated IgE supports that your respiratory symptoms are allergy-related rather than other causes.

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* Regular blood test results (e.g., CBC) typically start arriving the next business day after sample collection. More complex tests, such as hormone panels, may take up to 10–15 business days due to their complexity.

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Respiratory Allergy Profile Region XVII: CA (northwest), OR (west), WA (west)
What's included
Fast & easy, results by email & SMS
No need to visit a doctor
Private & confidential
No insurance needed
Results explained
No extra fees paid at the lab

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