Responding to Indoor Mold Concerns: A Resource for Environmental Public Health Professionals
Do you recommend testing my home for mold? Routine mold testing is usually not needed. Any indoor mold should be cleaned up as soon as it is found, and there are no established standards for safe levels of mold exposure. Mold testing can be complex, time-consuming, expensive, and often does not provide useful information about health risks. If mold testing is conducted, the work should be done by qualified professionals with experience in mold sampling, test design, and result interpretation. Samples should be analyzed using methods recommended by recognized professional organizations, such as the American Industrial Hygiene Association (AIHA), the American Conference of Governmental Industrial Hygienists (ACGIH), or similar groups (U.S. EPA, 2026). Is it possible to be tested for mold exposure? Patients are often faced with misleading and confusing claims regarding unvalidated diagnostic tests. There is no diagnostic test to support inhaled mycotoxins from indoor mold as a cause of systemic toxicity. Fungal immunoassay tests (i.e., testing for IgG and IgE) might be useful for assessing hypersensitivity pneumonitis, allergies, and other immunological conditions. They should typically be ordered and interpreted by physicians with specialized training in allergies and immunology. These tests do not measure levels of exposure to indoor mold, and positive results do not mean that there is current exposure or that mold is the cause of illness or symptoms. Individuals who have concerns about the health effects of indoor mold exposure should speak with their healthcare provider, who can help determine what approach is appropriate for their individual situation. In the meantime, attention is best directed toward identifying and cleaning affected areas and correcting the underlying moisture sources in the home.
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