Aspergillus fumigatus Antigen, Tissue — Qualitative Stain
A qualitative stain of a tissue sample looks for Aspergillus fumigatus antigen and may help support an Aspergillus infection diagnosis.
["A positive result can support the presence of Aspergillus in tissue, but results must be interpreted with the biopsy findings and clinical situation."]
Key facts at a glance
- LOINC
- 10481-0
- Short code
- A-FSH Ag Tiss Ql ImStn
- Synonyms
- A-FSH Ag Tiss Ql ImStn
- Category
- liver
- Sample
- serum
- Container
- Red-top tube (SST)
- Units
- N/A
- Ref low
- 3.5
- Ref high
- 12.5
- Fasting
- false
- Population
- adult
- Sex
- all
- Age range
- 18–65 years
- Method
- immune-stain
- CPT
- 83001
- Specimen volume
- 5 mL
- Stability
- Room temperature: 4h, Refrigerated: 24h, Frozen: 7d
- Hemolysis max
- 500
- Lipemia max
- 1000
- Icterus max
- 500
- TAT
- 4–24 hours
- Order
- routine
What is this test?
This test examines a tissue specimen, usually from a biopsy, for antigens from the fungus Aspergillus fumigatus. It uses a qualitative laboratory stain to look for evidence of the fungus in the tissue.
Why might I need this test?
This test may be ordered when a biopsy or other clinical findings suggest an invasive fungal infection. It can help pathologists determine whether Aspergillus is present in affected tissue.
How is the test performed?
A laboratory specialist applies a special staining method to the tissue and examines it for a characteristic reaction. The result is generally reported as positive or negative for detectable Aspergillus antigen.
How do I prepare for the test?
No special preparation is usually required when the test is performed on a tissue sample that has already been collected. Follow the instructions provided by the healthcare team if a new biopsy or other specimen collection is planned.
Reference range
Follicular: 3.5-12.5 mIU/mLN/A
For females: inform if menstrual cycle status. For certain tests, timing within menstrual cycle may matter.
Clinical interpretation
How abnormal results are interpreted and what conditions they suggest.
A positive result may support Aspergillus infection when the stained tissue also shows compatible microscopic changes. A negative result does not completely exclude infection, especially if the amount of organisms is small or the sample is not representative. Results should be interpreted together with symptoms, imaging, culture or other laboratory findings, and the biopsy report.
Short name
Aspergillus antigen tissue stain
Frequently asked questions
Does a positive result prove that I have an Aspergillus infection?
Can this test distinguish Aspergillus infection from colonization?
What happens if the tissue stain is negative?
Sources
- 1
- 2Lab Tests OnlineSource
- 3
Click any link to access the full source. PubMed Central (PMC) links provide free full-text access.
This information is for educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment.
This content is for general informational and educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment. Always seek the guidance of a qualified healthcare provider with any questions you have about a medical condition, and never disregard professional medical advice or delay seeking it because of something you read here.
If you think you may have a medical emergency, call your local emergency number or go to the nearest emergency department immediately.
Medically reviewed by WellAlly Editorial Team Last reviewed August 16, 2026. · Read our editorial policy