Test library
Indoor Mold Allergy Panel
This blood test measures IgE antibodies to Penicillium chrysogenum, a common indoor mold. It helps assess mold sensitization in people with recurring respiratory symptoms.
Order Penicillium Chrysogenum Allergy Test
Order online and visit a local collection site, or choose an at-home kit where available. No referral and no insurance required.
Order Penicillium Chrysogenum Allergy Test- Typical turnaround
- 1-3 business days
- Starting price
- From $49
- Results
- Confidential, online
Quick answer
The Penicillium Chrysogenum Allergy Test is a blood test that checks for IgE antibodies against Penicillium chrysogenum, a mold frequently found in damp indoor environments. Mold spores can trigger sneezing, nasal congestion, coughing, or wheezing in sensitized people, and exposure is often highest in humid or water-damaged spaces. The test helps show whether the immune system has become sensitized to this mold and is read with the person's symptom pattern.
What this test measures
Molds release spores and tiny fragments that can become airborne, and Penicillium chrysogenum is one of the molds commonly detected in indoor dust and damp building materials. When a sensitive person inhales these particles, IgE antibodies can trigger allergy symptoms. A blood test measures the concentration of IgE that binds Penicillium chrysogenum extract, indicating whether sensitization is present.
The test uses a single blood sample and results are usually reported as a quantitative value in kilounits per liter with a graded class. Mold panels often include several species such as Alternaria, Aspergillus, and Cladosporium because sensitization to more than one mold is common. Total serum IgE may also be reported when the order includes it.
People with year-round nasal or respiratory symptoms that worsen in damp rooms, basements, or buildings with moisture problems may order this test. It can also be added to a broader indoor allergen panel. This test detects allergy sensitization and is not a test for mold infection; a qualified healthcare provider should interpret the result with the person's environment and symptoms.
- Penicillium chrysogenum-specific IgE antibodies
- Quantitative allergen-specific IgE in kU/L
- Allergen-specific IgE class on a graded scale
- Total serum IgE when included
- Other mold extract markers when a mold panel is ordered
- Serum eosinophil count when included in the order
Why people order this test
- Investigate year-round respiratory symptoms in damp indoor spaces
- Assess mold sensitization as part of an indoor allergy evaluation
- Add detail to a broader mold or inhalant allergy panel
- Follow up on a positive mold screening result
- Support discussions about moisture control and indoor air quality
- Clarify symptoms that persist when pollen levels are low
How to prepare
No fasting is required. A blood sample is collected at the lab, and normal eating and drinking beforehand are fine. Follow the lab's instructions if other tests are included in the same order.
Understanding your results
Results are usually available within one to three business days. A positive result suggests sensitization to Penicillium chrysogenum, while a negative result makes that sensitivity less likely. A healthcare provider should interpret the result with your symptoms and environment.
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Frequently Asked Questions
Is this test the same as a mold infection test?
No. This test measures allergic sensitization to mold through IgE antibodies. Tests for mold infection look for the organism itself or the body's response to it and are ordered separately.
Where is Penicillium chrysogenum commonly found?
It is often found in indoor dust, on damp walls, and in water-damaged materials. It can also appear on spoiled food and in some outdoor environments.
Can mold allergy cause asthma symptoms?
Mold sensitization is associated with nasal and respiratory symptoms, and it can contribute to asthma symptoms in some people. A healthcare provider can help assess the relationship in your case.
Why are several molds tested together?
People are often sensitized to more than one mold species, and patterns of cross-reactivity exist. A panel gives a broader view than a single allergen.
How is the sample collected?
A small blood sample is drawn from a vein, usually in the arm, during a brief lab visit.
Ready to get tested?
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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