: Aspergillus niger Antibody, Serum
: This test looks for antibodies your immune system makes against Aspergillus niger, a common environmental mold. It can help assess whether you have been exposed to or are reacting to this mold.
[": A positive result indicates immune exposure to Aspergillus niger but must be interpreted alongside your symptoms and other findings."]
Key facts at a glance
- LOINC
- 31232-2
- Short code
- ASPNAB
- Synonyms
- A niger Ab Fld Ql
- Category
- chemistry
- Sample
- serum
- Container
- Serum separator tube (SST) or red-top clot tube
- Units
- N/A
- Fasting
- false
- Population
- adult
- Sex
- all
- Age range
- 18–65 years
- Method
- Enzyme-linked immunosorbent assay (ELISA) or Immunofluorescence Assay (IFA) for detection of Aspergillus niger-specific IgG/IgM antibodies
- CPT
- 86606
- SNOMED
- 3952009
- Specimen volume
- 1-2 mL serum
- Stability
- Stable for 7 days at 2-8°C; for longer storage, freeze at -20°C or below. Avoid repeated freeze-thaw cycles.
- Hemolysis max
- 100
- Lipemia max
- 200
- Icterus max
- 40
- TAT
- 24–72 hours
- Order
- routine
: What This Test Measures
: The test detects antibodies (immune proteins) directed against Aspergillus niger, a mold found widely in soil, dust, and decaying plant material. The presence and level of these antibodies can show whether your body has recognized and responded to this mold.
: Why It May Be Ordered
: Your healthcare provider may order this test when evaluating respiratory or allergic-type symptoms that could relate to mold exposure. It is often used as part of a broader allergy or hypersensitivity workup rather than on its own.
: How the Sample Is Collected
: A blood sample is drawn from a vein in your arm and sent to the laboratory for analysis. No special preparation is usually required, though you should follow any instructions given by your provider.
: What Results Can Mean
: Results are typically reported in a qualitative or semi-quantitative form depending on the laboratory. A positive or elevated result suggests prior exposure or an immune response to the mold, but it does not by itself confirm disease. Your provider will interpret it together with your history, symptoms, and other tests.
Reference range
Negative: No detectable Aspergillus niger antibodies. Positive: Presence of Aspergillus niger-specific antibodies indicating exposure or infection. Results interpreted as Negative, Equivocal, or Positive based on assay-specific index/cutoff values.N/A
No fasting required. Patients on antifungal therapy (amphotericin B, voriconazole, itraconazole, posaconazole) should be noted as therapy may affect antibody response. Recent blood transfusions or immunoglobulin therapy may influence results.
Clinical interpretation
How abnormal results are interpreted and what conditions they suggest.
◆Associated findings1
Short name
: Aspergillus niger Ab
Frequently asked questions
: Does a positive result mean I have a mold infection?
: Is this the same as allergy testing?
: Do I need to prepare for this test?
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 15, 2026. · Read our editorial policy