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Test Code LAB8944 Aspergillus (Galactomannan) Antigen, Serum

Important Note

Mayo's test code: ASPAG

NOTE: Specimen must remain in orginal tube during transport and cannot be exposed to outside atmosphere. Do not aliquot and send sample in orginal tube.

Performing Laboratory

Mayo Clinic Laboratories in Rochester

Reporting Name

Aspergillus Ag, S

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.


Reject Due To

Gross hemolysis Reject
Gross lipemia Reject

Specimen Stability Information

Specimen Type Temperature Time Special Container
Serum SST Refrigerated (preferred) 14 days SERUM GEL TUBE
  Frozen  14 days SERUM GEL TUBE

Specimen Minimum Volume

1 mL

Day(s) Performed

Monday through Friday, Sunday

Specimen Retention Time

2 weeks

Report Available

1 to 4 days

Reference Values

<0.5 index

Reference values apply to all ages.

Useful For

Aiding in the diagnosis of invasive aspergillosis

 

Assessing response to therapy

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

Supportive Data

In clinical studies submitted for the US Food and Drug Administration-approval process, the sensitivity of the test was reported to be 81% for proven/provable invasive aspergillosis (N=31 patients), and the specificity was 89% (N=148 patients). The positive and negative predictive values were reported as 68% and 96% respectively, based on an average prevalence of 14% in the study population. In a low-prevalence population (5%), the positive predictive value decreases to 31%; the negative predictive value remains at 96%.(Package insert: Platelia Aspergillus EIA, Bio-Rad Laboratories; 06/2003)

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