What is this test?
The test measures IgG antibodies to Dermatophagoides pteronyssinus. IgG to a mite is not the same as specific IgE and does not prove an allergy to house dust.
Why might it be ordered?
- If the test is specifically ordered, to discuss what the IgG response to a mite indicates and how it differs from allergic sensitization.
- For referral to established evaluation with symptoms, specific IgE, or skin testing when mite allergy is suspected.
What sample is needed?
A healthcare professional collects a venous blood sample. Depending on the method, the laboratory uses serum or plasma.
How should you prepare?
Fasting is usually not required. Don't change your medicines or environment just because of this test. Tell the laboratory about all medicines, hormone treatments, vitamins and supplements you take. Do not stop or change treatment unless your clinician tells you to. Follow any instructions about fasting and the time of collection.
How should you understand the result?
Detected IgG antibodies indicate immune contact with the examined mite, but are not equivalent to specific IgE and do not prove clinical allergy.
Sources and editorial status
This patient-facing text is an editorial draft. It should be approved by a laboratory physician before official publication.