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HelpTest Code ASPAG Aspergillus (Galactomannan) Antigen, Serum
Additional Codes
CNE Order Code: Galactomannan Ag
Reporting Name
Aspergillus Ag, SUseful For
Aiding in the diagnosis of invasive aspergillosis
Assessing response to therapy
Performing Laboratory
Mayo Clinic Laboratories in Rochester
Specimen Type
Serum SSTOrdering Guidance
For bronchoalveolar lavage specimens, order ASPBA / Aspergillus Antigen, Bronchoalveolar Lavage.
Specimen Required
Container/Tube: Serum gel (red-top tubes are not acceptable)
Specimen Volume: 1.5 mL
Collection Instructions:
1. Avoid exposure of specimen to atmosphere to prevent sample contamination from environment.
2. Centrifuge and send specimen in original tube. Do not aliquot or open tube.
Specimen Minimum Volume
1 mL
Specimen Stability Information
| Specimen Type | Temperature | Time | Special Container |
|---|---|---|---|
| Serum SST | Refrigerated (preferred) | 14 days | SERUM GEL TUBE |
| Frozen | 14 days | SERUM GEL TUBE |
Reference Values
<0.5 index
Reference values apply to all ages.
Day(s) Performed
Monday through Friday, Sunday
CPT Code Information
87305
LOINC Code Information
| Test ID | Test Order Name | Order LOINC Value |
|---|---|---|
| ASPAG | Aspergillus Ag, S | 44357-2 |
| Result ID | Test Result Name | Result LOINC Value |
|---|---|---|
| 84356 | Aspergillus Ag, S | 44357-2 |
Interpretation
A positive result supports a diagnosis of invasive aspergillosis (IA). Positive results should be considered in conjunction with other diagnostic procedures, such as microbiologic culture, histological examination of biopsy specimens, and radiographic evidence. See Cautions.
A negative result does not rule out the diagnosis of IA. Repeat testing is recommended if the result is negative but IA is clinically suspected. Patients at risk of IA should have a baseline serum tested and should be monitored twice a week for increasing galactomannan antigen levels.
Galactomannan antigen levels may be useful in the assessment of therapeutic response. Antigen levels decline in response to antimicrobial therapy.
Report Available
1 to 4 daysReject Due To
| Gross hemolysis | Reject |
| Gross lipemia | Reject |
Method Name
Enzyme Immunoassay (EIA)