Lab test

American Dust Mite Allergy Test - D farinae

The American Dust Mite Allergy Test measures immunoglobulin E (IgE) antibodies against Dermatophagoides farinae, one of the most common house dust mites.

Typical price

From $49

Results

1-3 business days

Preparation

See preparation notes below

Sample

Blood draw or sample collection at a local center

The American Dust Mite Allergy Test measures immunoglobulin E (IgE) antibodies against Dermatophagoides farinae, one of the most common house dust mites. Dust mites live in bedding, upholstery, and carpet, and their particles are a leading cause of year-round indoor allergy symptoms such as sneezing, a runny nose, and itchy eyes. This blood test helps determine whether your symptoms may be driven by D. farinae sensitivity. Results are interpreted with your home environment and symptom pattern, and may guide discussion about reducing dust-mite exposure.

• Dermatophagoides farinae-specific IgE Measures IgE antibodies that react to the American house dust mite, D. farinae.

• People with year-round sneezing, a runny nose, or itchy eyes that worsen indoors.
• Individuals with asthma or eczema whose provider suspects a dust-mite trigger.
• People who notice symptoms in bed or after cleaning dusty areas.
• Anyone with a known dust-mite allergy who wants to confirm the specific species.
• Caregivers investigating persistent indoor allergy symptoms in children.

• No fasting is required.
• Continue your usual medications unless a healthcare provider advises otherwise.
• Pause antihistamines before testing only if your provider instructs you to, as they may affect some allergy results.
• Make a note of when and where your symptoms occur, especially at home or in bed.

The report shows the level of D. farinae-specific IgE antibodies. A higher level may suggest sensitisation to the American dust mite, while a low or undetectable level makes allergy less likely. Sensitisation does not always cause symptoms, and a positive result is best interpreted with your history and home environment. Because other dust mites exist, your provider may also consider related species. Discuss any positive or unexpected result with a healthcare provider, who can advise on appropriate next steps.

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