Galactomannan (Aspergillus Antigen) Serum Test
Short Name: Galactomannan Test
Also known as: Aspergillus Antigen Test, GM Test
Galactomannan (Aspergillus Antigen) Serum Test test available at DNA Labs India for ₹7,000. Uses Enzyme Immunoassay (EIA) on Serum samples. Results in Same day for samples collected on Tue, Thu, Sat by 9 am.. Free home collection in 300+ cities across India.
🩺 Medically Reviewed By
Dr Pasupathy Arumugam
Consultant Pathologist · Reg: 21521
Last reviewed: September 7, 2026
Overview
The purpose of this test is to detect Aspergillus infection by measuring galactomannan antigen in the serum, aiding in the early diagnosis of Invasive Aspergillosis and monitoring treatment response.
- Test Code
- 633
- Price
- ₹7,000
- Sample Type
- Serum
- Result Time
- Same day for samples collected on Tue, Thu, Sat by 9 am.
- Fasting Required
- No
- Method
- Enzyme Immunoassay (EIA)
Sample Collection
No special preparation required.
Method: Venipuncture
Laboratory Analysis
A blood sample is drawn from a vein in the arm using standard venipuncture techniques.
Report Delivery
Apply pressure to the puncture site to stop bleeding and bandage if necessary.
Timeline: Same day for samples collected on Tue, Thu, Sat by 9 am.
Patient Instructions
About This Test
Who Should Get This Test
The purpose of this test is to detect Aspergillus infection by measuring galactomannan antigen in the serum, aiding in the early diagnosis of Invasive Aspergillosis and monitoring treatment response.
How to Prepare
- Collect 2 mL of blood in an SST tube.
- Ship sample refrigerated or frozen as per stability guidelines.
Doctor's Notes
Reviewed by Dr Pasupathy Arumugam — MBBS, MD (Pathology) · Reg. No. 21521
"Early detection through galactomannan testing is vital for managing invasive aspergillosis in high-risk patients, allowing for timely antifungal therapy."
Last medically reviewed: September 7, 2026
Test Parameters & Specifications
Sample Stability
- Hemolyzed or lipemic samples
- Improper labeling or insufficient volume
Understanding Your Results
Positive (Index ≥ 0.5)
Suggests possible Aspergillus infection; clinical correlation and further testing recommended.
Negative (Index < 0.5)
Aspergillus antigen not detected; does not rule out infection if clinical suspicion is high.
Indeterminate
Results near the cutoff; repeat testing or additional diagnostics may be needed.
If you experience symptoms of aspergillosis such as persistent cough, fever, or shortness of breath, or if test results are positive or inconclusive, consult a doctor immediately.
Limitations
- ⚠This test should not be used as the sole diagnostic method; correlation with clinical findings and other tests is necessary.
- ⚠False positives can occur due to cross-reactivity.
- ⚠Sensitivity may vary in non-neutropenic patients.
Risks & Considerations
- ●Minor bruising or pain at the puncture site
- ●Rare risk of infection or excessive bleeding
Interfering Factors
- ●Cross-reactivity with other fungal infections
- ●Use of certain antibiotics like piperacillin-tazobactam
- ●Presence of other polysaccharides in blood
Compare With Similar Tests
| Test | Galactomannan (Aspergillus Antigen) Serum Test | Chest X-ray | CT Scan | Sputum Culture | Bronchoscopy |
|---|---|---|---|---|---|
| Comparison | Galactomannan (Aspergillus Antigen) Serum Test |
Frequently Asked Questions
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