What does this test include?
Optigen 20 Atopy is a panel for specific IgE to a core set of 20 allergens. It shows sensitization to the components involved.
Why might it be ordered?
- For symptoms that point to a few specific food or airborne allergens from the set.
- As an initial laboratory evaluation when skin testing is not appropriate.
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. Describe your symptoms, the possible exposures and how soon each reaction began. 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 are the results reported?
Check the report to see which allergens were measured and whether each has a separate result. A positive result should be compared with actual symptoms after exposure. Detectable specific IgE indicates sensitization, not necessarily clinical allergy. The results should match actual post-exposure symptoms.
Sources and editorial status
This patient-facing text is an editorial draft. It should be approved by a laboratory physician before official publication.