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Mold Spore Allergy Blood Test

The Alternaria alternata Allergy Test measures IgE antibodies against Alternaria alternata mold spores in a blood sample. It is used to evaluate mold sensitivity that may contribute to nasal, eye, or respiratory symptoms.

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Typical turnaround
1-3 business days
Starting price
From $49
Results
Confidential, online

Quick answer

The Alternaria alternata Allergy Test is a blood test that measures immunoglobulin E antibodies against Alternaria alternata, a common outdoor and indoor mold. Sensitivity to mold spores can contribute to sneezing, nasal congestion, itchy eyes, and asthma-like symptoms, especially in damp environments or during certain seasons. The test requires only a blood draw, and results are interpreted with symptom patterns and exposure history by a qualified healthcare provider.

What this test measures

Alternaria alternata is a mold that grows on plant debris, soil, and damp indoor surfaces. Its spores become airborne and can be inhaled, which is why mold sensitivity often shows up as nasal or respiratory symptoms. Allergy blood testing measures IgE antibodies that recognize proteins from the mold rather than testing the environment itself.

The test reports Alternaria-specific IgE, and some laboratories include total IgE or a broader mold panel with species such as Aspergillus, Cladosporium, and Penicillium. Because mold spores are widespread and seasonal patterns vary, the result is most useful when combined with information about where and when symptoms occur.

This test is often ordered for people with year-round or damp-weather nasal symptoms, unexplained respiratory complaints, or asthma that worsens in certain environments. It may also be part of a broader allergy evaluation. A qualified healthcare provider can interpret the findings together with your history and other test results.

  • Alternaria alternata-specific IgE antibody
  • Total serum IgE
  • Alternaria alternata (Alt a 1) component
  • Mold allergen panel components
  • Cladosporium herbarum components
  • Aspergillus fumigatus components
  • Cross-reactive carbohydrate determinants (CCD)

Why people order this test

  • Evaluate year-round or damp-weather nasal and eye symptoms
  • Investigate respiratory symptoms that may be linked to mold exposure
  • Confirm mold sensitivity suggested by skin testing
  • Support an asthma evaluation when environmental triggers are suspected
  • Identify triggers before planning home or workplace changes
  • Part of a broader allergy panel for environmental allergens
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How to prepare

No fasting is required. A single blood sample is collected at a laboratory and can be drawn at any time of day. Tell the ordering provider about your home or work environment and when your symptoms tend to occur, since that context helps with interpretation.

Understanding your results

Results are typically available within one to three business days. The report shows whether Alternaria-specific IgE was detected and at what level class. A qualified healthcare provider can explain how the result fits with your symptoms and any other allergy findings.

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Frequently Asked Questions

What is Alternaria alternata?

It is a common mold found outdoors on plant material and indoors in damp areas. Its spores can become airborne and trigger allergic symptoms in sensitive people.

Where is Alternaria mold usually found?

It grows on decaying plant matter, soil, and damp building materials. Outdoor levels often rise in warm, humid weather.

Can mold allergy cause asthma symptoms?

Mold sensitivity can contribute to coughing and wheezing in some people. A qualified healthcare provider can assess whether mold is playing a role.

Is a blood test better than a skin test for mold allergy?

Both approaches can be useful. Blood testing avoids skin exposure and can be convenient when skin testing is not suitable.

Do I need to avoid mold before the test?

No. The test measures antibodies already present in the blood, so no exposure changes are needed beforehand.

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Order online and visit a collection site near you, or choose a mail-in kit. No referral and no insurance required.

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Medical disclaimer. The information on LabOrdering.com is educational only and is not medical advice, diagnosis, or treatment. Reference ranges and clinical guidance vary between laboratories. Always consult a qualified healthcare provider about your own results and care.