Test Overview
Test Methodology

Immunodiffusion

Test Usage

Tests are performed with standardized antigens of A. flavus, A. niger and A. fumigatus. Positive results, represented by one or more precipitin lines, are indicative of fungus ball, allergic bronchopulmonary aspergillosis (ABA), or invasive aspergillosis. Generally, the finding of 3-4 bands will indicate either fungus ball or ABA, with many cases of invasive aspergillosis requiring serum concentration for demonstration of precipitin lines.

Reference Range *

Negative

* Reference ranges may change over time. Please refer to the original patient report when evaluating results.

Test Details
Days Set Up
Monday - Friday
Analytic Time

5 - 11 days

Soft Order Code
FASP
MiChart Code
Aspergillus antibodies by Immunodiffusion (Sendout)
Synonyms
  • FIDAX
  • ASPERGILLUS IMMUNODIFFUSION
  • Aspergillus flavus Antibody
  • Aspergillus niger Antibody
  • Aspergillus fumigatus Antibody
  • Aspergillus Precipitins
  • FASP
  • Aspergillus Ab, ID, Serum
Laboratory
Sendout
Reference Laboratory
Mayo FASP (91607) (Focus 40155)
Section
Special Testing
Specimen Requirements
Collection Instructions

Collect specimen in a red top or SST tube. Centrifuge, aliquot serum into a plastic vial and refrigerate.

Yellow Top Tube
Normal Volume
1 mL serum
Minimum Volume
0.1 mL serum
Additional Information

Test sent to Mayo Medical Laboratories; performed by Focus Diagnostics.

Billing
CPT Code
86603 x3
Fee Code
20267
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