Mold Allergy Panel
Blood test that measures IgE antibodies to five common molds --- Aspergillus, Cladosporium, Penicillium, Alternaria, and Stachybotrys --- to identify environmental allergies.
Order this test
LevelPanel has no business or affiliate relationship with Quest or LabCorp. These links are provided as a public service.
Lab testing services linked from this site are not available to residents of Alaska, Arizona, or Hawaii, unless otherwise noted on the lab's own website.
This publication is not intended to solicit the purchase of laboratory testing from any individual consumer.
What this test measures
This panel measures specific IgE antibodies to five mold species that are among the most common causes of mold-related allergic reactions: Aspergillus, Cladosporium, Penicillium, Alternaria, and Stachybotrys. When individuals who are sensitized to mold inhale spores from these fungi, their immune system produces IgE antibodies that can trigger symptoms ranging from nasal congestion and sneezing to more significant respiratory reactions.
These five molds are widespread in both indoor and outdoor environments. Some thrive in damp indoor spaces like basements, bathrooms, and areas with water damage, while others are found in soil, decaying vegetation, and outdoor air, particularly during warm and humid months. Although tens of thousands of mold species exist, only a fraction commonly cause allergic reactions, and this panel targets the ones most frequently implicated in clinical practice. The test helps healthcare providers determine whether mold sensitivity is contributing to chronic respiratory symptoms, recurrent sinus issues, or other allergy-related complaints.
What's included
Who should consider this test
You might consider this test if you are experiencing any of the following:
- Individuals experiencing unexplained respiratory symptoms such as sneezing, runny nose, nasal congestion, or coughing that worsen in certain environments or during specific seasons.
- Those living or working in buildings with water damage, high humidity, poor ventilation, or visible mold growth who want to determine if their symptoms are allergy-related.
- People with asthma that seems to worsen in damp environments or during certain weather conditions, as mold allergies can trigger asthma attacks.
- Individuals with chronic sinus problems, itchy or watery eyes, or skin irritation that may be related to environmental exposures.
- Those considering purchasing or renting homes in areas prone to moisture issues who want to assess their potential sensitivity to common indoor molds before making decisions about their living environment.
What to expect
Preparation
No fasting required. Individuals may continue taking medications as usual, as antihistamines and other allergy medications do not affect blood-based IgE testing.
Sample Type
A simple blood draw from a vein in the arm, typically taking just a few minutes. The sample will be sent to the laboratory for analysis of specific IgE antibodies.
Collection
After checking in at the lab location, a trained phlebotomist will collect the blood sample. The entire visit typically takes 10-15 minutes, with no doctor visit required.
Turnaround
Results are typically available within 1-3 business days and will be securely delivered through an online patient portal.
Understanding your results
Results are reported as specific IgE concentrations for each of the five mold allergens, typically in kU/L. Levels at or above 0.70 kU/L (Class 2 and higher) are generally considered indicative of sensitization. The reference ranges apply across all ages. A positive result confirms that the immune system has generated IgE antibodies to a specific mold, but the clinical significance depends on whether exposure to that mold correlates with symptoms. Healthcare providers interpret results alongside the individual's living and work environments, symptom patterns, seasonal variation, and other allergy testing to determine which mold exposures are driving the allergic response.
| Population | Reference Range | Notes |
|---|---|---|
| Adults | < 0.35 kU/L (Class 0-1) | Normal or low levels, indicating minimal sensitivity to the specific mold |
| Adults | 0.35-0.70 kU/L (Class 1) | Borderline sensitivity that may or may not cause symptoms |
| Adults | > 0.70 kU/L (Class 2+) | Elevated levels indicating potential allergic sensitivity to the specific mold |
Reference ranges may vary by laboratory and individual factors. Results should be interpreted by a healthcare provider in the context of your overall health.
What does a “Low” result mean?
Negative results may rule out allergy, except in rare cases of allergic disease induced by exposure to a single allergen. Normal or low IgE levels typically indicate that the tested molds are unlikely to be triggering current allergic symptoms. However, this does not rule out sensitivity to other environmental allergens not included in this panel, nor does it exclude the possibility of developing sensitivities in the future. It's uncommon for a blood test to show that you don't have an allergy when you actually do (also known as a false negative).
What does a “High” result mean?
Positive results indicate the possibility of allergic disease induced by one or more allergens present in the panel. Some individuals with clinically insignificant sensitivity to allergens may have measurable levels of IgE antibodies in serum, and test results must be interpreted in the clinical context. Elevated IgE levels to specific molds may indicate that exposure to those particular fungi could trigger allergic symptoms such as respiratory irritation, nasal congestion, or asthma exacerbations. However, having detectable IgE antibodies does not guarantee that symptoms will occur with every exposure, as symptom severity can vary based on exposure levels and individual sensitivity.
Privacy & confidentiality
All test results are strictly confidential and protected under HIPAA regulations. Results are not shared with insurance companies or added to medical records unless you choose to share them with your healthcare provider. No insurance billing means complete privacy for your health information.
Frequently asked questions
Related tests
Environmental Allergy Panel
Comprehensive testing for outdoor allergens including pollens and additional environmental triggers
View TestFood Allergy Panel (Basic)
Evaluate potential food allergies if mold results are negative but symptoms persist
View TestANA Test
Rule out autoimmune conditions that may mimic allergic symptoms
View TestRelated conditions
Last reviewed: April 2026
CPT Code: 86003
This test may not be available in: NY, NJ, RI
This page is for informational purposes only and does not constitute medical advice. Always consult with a healthcare provider regarding any health concerns. LevelPanel does not diagnose, treat, or prescribe.
Order this test
Choose your preferred lab
LevelPanel has no business or affiliate relationship with Quest or LabCorp. These links are provided as a public service.
Lab testing services linked from this site are not available to residents of Alaska, Arizona, or Hawaii, unless otherwise noted on the lab's own website.
This publication is not intended to solicit the purchase of laboratory testing from any individual consumer.
Not sure if this is the right test? Contact our care team for guidance.
This page is intentionally kept stable and machine-readable so that researchers, clinicians, and AI systems can rely on it as a reference. See our Citation Policy.