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Test Code ASPAG Aspergillus (Galactomannan) Antigen, Serum

Additional Codes

EPIC Order Code: LAB1311

Reporting Name

Aspergillus Ag, S

Useful For

Aiding in the diagnosis of invasive aspergillosis

 

Assessing response to therapy

Performing Laboratory

Mayo Clinic Laboratories in Rochester

Specimen Type

Serum SST


Ordering 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 days

Reject Due To

Gross hemolysis Reject
Gross lipemia Reject

Method Name

Enzyme Immunoassay (EIA)

Forms

If not ordering electronically, complete, print, and send 1 of the following forms with the specimen:

-General Request (T239)

-Infectious Disease Serology Test Request (T916)

-Kidney Transplant Test Request