Aspergillus Niger Antibody Test in Arizona

What this test measures

Aspergillus niger is a common mold that grows on damp building materials, stored crops, and decaying plant matter. Its spores become airborne when contaminated surfaces or materials are disturbed, and sensitive people can react with sneezing, congestion, itchy eyes, or asthma-like symptoms. Exposure tends to be higher in water-damaged buildings and some agricultural settings.

The test measures allergen-specific IgE in serum using a quantitative immunoassay. A single blood draw is enough, and the laboratory reports the level of Aspergillus niger-specific IgE together with a reactivity class. Because many molds share overlapping allergens, results are often reviewed alongside other mold tests in the same panel.

A positive result indicates sensitization rather than a confirmed cause of symptoms. Whether someone reacts depends on exposure and individual sensitivity. Clinicians combine the finding with a symptom history, physical exam, and sometimes additional testing before discussing avoidance measures or further evaluation.