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Complete Blood Count (CBC)

Published: August 9, 2026Updated: August 16, 2026

This test detects antibodies against Aspergillus fumigatus fungus in blood or other body fluids to help diagnose fungal infections.

Quick summary

{"Detects antibodies against Aspergillus fumigatus fungus","Helps diagnose invasive aspergillosis and allergic conditions","Performed on serum or other body fluid samples","Positive result indicates current or past fungal exposure","Results should be interpreted with clinical symptoms and other tests"}

Medically reviewed by WellAlly Editorial TeamLast reviewed August 16, 2026Editorial policy

Key facts at a glance

LOINC
40828-6
Short code
A fumgtus Ab Fld Ql
Synonyms
A fumgtus Ab Fld Ql
Category
chemistry
Sample
serum
Container
Red-top tube (SST)
Units
N/A
Fasting
false
Population
adult
Sex
all
Age range
18–65 years
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 a complete blood count (CBC) test?

The Aspergillus fumigatus antibody test is a laboratory test that detects the presence of antibodies (IgG, IgM, or IgA) against Aspergillus fumigatus in your body fluid, most commonly blood serum. Aspergillus fumigatus is a common mold (fungus) found in the environment. While most people inhale these spores daily without harm, individuals with weakened immune systems or certain lung conditions may develop serious infections.

How is a complete blood count (CBC) test performed?

A healthcare professional will collect a blood sample from a vein in your arm. For other body fluids, the sample may be collected through other methods depending on the fluid type. The sample is then sent to a laboratory where it is tested using specialized techniques to detect antibodies specific to Aspergillus fumigatus.

What do the results of a complete blood count (CBC) test mean?

Results are typically reported as positive or negative (presence or absence of antibodies). A positive result means antibodies against Aspergillus fumigatus were detected, which could indicate: a current fungal infection, a past exposure to the fungus, or an allergic reaction to the fungus. A negative result suggests no detectable antibodies, which could mean no infection, very early infection (before antibodies developed), or a weakened immune system that cannot produce detectable antibodies. Your doctor will interpret the results together with your symptoms, imaging studies, and other test results.

Are there any risks with a complete blood count (CBC) test?

The risks associated with this test are minimal and similar to routine blood tests. You may experience slight pain, bruising, or dizziness during or after the sample collection. These typically resolve quickly. There is a very small risk of infection at the puncture site.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

The Aspergillus fumigatus antibody test is clinically significant for diagnosing several conditions: Invasive aspergillosis (IA) - a serious infection that commonly affects immunocompromised patients such as those with leukemia, organ transplant recipients, or patients on high-dose corticosteroids; Allergic bronchopulmonary aspergillosis (ABPA) - an allergic reaction to Aspergillus that can cause asthma-like symptoms and lung damage; Aspergilloma - a fungal ball that forms in pre-existing lung cavities; Chronic pulmonary aspergillosis - a long-term lung infection in patients with underlying lung disease.

This test is particularly important for patients with: weakened immune systems (due to chemotherapy, HIV/AIDS, or immunosuppressant medications), underlying lung diseases (such as asthma, COPD, cystic fibrosis), organ or stem cell transplant recipients, and those with prolonged neutropenia (low white blood cell count). Early detection of Aspergillus infection is crucial for successful treatment, as invasive aspergillosis can be life-threatening if not treated promptly.

Frequently asked questions

Do I need to fast before this test?
No, fasting is typically not required for this test. You can eat and drink normally before the test unless your doctor instructs otherwise.
How long does it take to get results?
Results are usually available within a few days to a week, depending on the laboratory. Your healthcare provider will inform you when the results are ready.
Can this test tell if I have an active infection?
The antibody test indicates whether your immune system has been exposed to Aspergillus fumigatus. A positive result may suggest current or past exposure. To confirm an active infection, doctors often combine this test with other tests like antigen detection, culture, imaging (CT scan), and clinical symptoms.
Is a positive result always serious?
Not necessarily. A positive result could indicate a mild or past infection, or simply exposure to the fungus without active disease. People with healthy immune systems often have antibodies from previous exposures without experiencing any symptoms. Your doctor will interpret the result in the context of your overall health and symptoms.
What happens if my test is positive?
If your test is positive, your healthcare provider will evaluate your symptoms, medical history, and may order additional tests (such as chest X-ray, CT scan, or other fungal tests) to determine if treatment is needed. Treatment may include antifungal medications if an active infection is confirmed.
  1. 1
    Mayo Clinic Laboratories - Aspergillus fumigatus IgGSource
  2. 2
    CDC - AspergillosisSource
  3. 3
    UpToDate - Aspergillosis: Clinical manifestations and diagnosisSource

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.

Medical Disclaimer

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