Lab test

Alternaria alternata Allergy Test - Mold

An Alternaria alternata-specific IgE blood test measures antibodies the immune system may produce against spores of the mold Alternaria alternata.

Typical price

From $49

Results

1-3 business days

Preparation

See preparation notes below

Sample

Blood draw or sample collection at a local center

An Alternaria alternata-specific IgE blood test measures antibodies the immune system may produce against spores of the mold Alternaria alternata. It is a screening tool for suspected mold allergy, not a diagnosis on its own. Clinicians may order it when nasal, eye, or respiratory symptoms worsen in damp or moldy environments or during periods of high outdoor mold, or when reviewing a mold allergy panel. Results are interpreted alongside symptom timing and exposure history.

• Alternaria alternata mold spore-specific IgE IgE antibodies directed against Alternaria alternata mold spores; used to assess sensitization to this mold allergen.

• Nasal, eye, or respiratory symptoms that worsen in damp or moldy spaces
• Symptoms that follow outdoor exposure during mold season
• Known mold sensitivity when component-level testing is desired
• Evaluation as part of a mold or environmental allergy panel

• No fasting is required for most IgE allergy tests
• Report antihistamines and other medications, as some may affect interpretation
• A single blood draw is collected; no special diet or timing is needed

The Alternaria alternata mold spore-specific IgE result is reported as a level, often described as negative, low, moderate, or high. A detectable or elevated level may indicate sensitization to Alternaria alternata spores, but it does not confirm that this mold is causing symptoms. A negative result does not completely rule out allergy. Because mold spores can share proteins, cross-reactivity is possible; discuss results with a healthcare provider.

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