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HelpTest Code ASG, ASGB, ASGC Aspergillus Galactomannan Antigen
Additional Codes
| Test | ASG | ASGB | ASGC |
| Epic Ordering Code | LAB1311 | LAB1901 | LAB1900 |
|---|---|---|---|
| NBS code | LBC02804 | LBC02804 | LBC02804 |
| Service code | 23009 | 23009 | 23009 |
Specimen Requirements
Submit only one of the following
| Preferred: | |||
| Red Top Tube | Gold top SST | White sterile container | |
|
|
Specimen Type: Serum
Container/Tube: Gold Top (SSTII) / Red Top
Volume: 6.0 mL, 0.5 mL (Microtainer) / 5.0 mL
Minimum Volume: 1.0 mL serum (Please send at least 3 full Microtainer)
Specimen Type: BAL (ASGB), CSF (ASGC)
Container/Tube: Sterile, screw-capped container
Volume: 2.0 mL
Minimum Volume: 1.0 mL
Specimen Stability and Condition
| Specimen Type | Serum, BAL, CSF |
|---|---|
| Ambient | Submit sample to lab immediately |
| Refrigerate | 2 days |
| Frozen | 14 days |
Methodology
Enzyme Immunoassay
Days and Times Performed
Monday and Thursday mornings, TAT 1-5 days
Sample must reach Microbiology Laboratory by 9 am on test day for result to be available on the same day.
Reference Interval
< 0.5 GM Index (for serum)
Testing Laboratory
National University Hospital
Clinical Microbiology, 6772 4343
Useful For
Detection of galactomannan, a major constituent of Aspergillus cell walls, for the diagnosis of invasive Aspergillosis.
Update
Last updated 01/09/2026
LOINC Code Information
| ASG | 44357-2 |
|---|---|
| ASGB | 88555-8 |
| ASGC | 53865-2 |