Skip to content

Afumigatus3abserql

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

This blood test detects antibodies against Aspergillus fumigatus fungus to help diagnose fungal infections.

Quick summary

{"Detects IgG antibodies against Aspergillus fumigatus fungus","Helps diagnose invasive aspergillosis and allergic reactions","Simple blood draw test requiring no special preparation","Results indicate current or past fungal exposure","Often used with other tests for complete diagnosis"}

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

Key facts at a glance

LOINC
22085-5
Short code
A fumigatus3 Ab Ser Ql
Synonyms
A fumigatus3 Ab Ser Ql
Category
chemistry
Sample
serum
Container
Red-top tube (SST)
Units
N/A
Fasting
false
Population
adult
Sex
all
Age range
18–65 years
CPT
82784
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?

The Aspergillus fumigatus 3 Antibody test is a blood test that looks for specific antibodies (called IgG) that your immune system produces in response to Aspergillus fumigatus, a common type of mold found in the environment. This test determines whether these antibodies are present in your blood.

Why might I need this test?

Your doctor may order this test if you have symptoms of an Aspergillus infection, such as fever, cough, shortness of breath, or lung problems. It is particularly important for people with weakened immune systems (like chemotherapy patients, transplant recipients, or people with HIV/AIDS) who are at higher risk for serious fungal infections. The test is also used to diagnose allergic bronchopulmonary aspergillosis (ABPA), an allergic reaction to the fungus.

How is the test performed?

A healthcare professional will draw a small blood sample from a vein in your arm. The blood is then sent to a laboratory for analysis. You do not need to fast or make any special preparations before this test.

What do the results mean?

A positive result means that antibodies to Aspergillus fumigatus were detected in your blood, indicating that you have been exposed to the fungus. However, this does not always mean you have an active infection. Your doctor will interpret the results along with your symptoms, other test results, and imaging studies to determine if treatment is needed. A negative result suggests no current exposure, but a doctor may still suspect infection if symptoms persist.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

This test is primarily used to diagnose invasive aspergillosis, a serious fungal infection that commonly affects the lungs and can spread to other organs in immunocompromised patients. It is also valuable in diagnosing allergic bronchopulmonary aspergillosis (ABPA), which occurs in people with asthma or cystic fibrosis. The test helps monitor treatment response in patients receiving antifungal therapy and can detect previous exposure to Aspergillus species. Results must be correlated with clinical findings, as positive antibodies may indicate past exposure rather than active disease.

Frequently asked questions

Is this test painful?
You may feel a brief sting when the needle is inserted to draw blood, but the discomfort is minimal and typically lasts only a few seconds.
How long does it take to get results?
Results are usually available within a few days, but this may vary depending on the laboratory.
Do I need to fast before this test?
No special preparation, including fasting, is required for this test.
What does a positive result mean?
A positive result indicates the presence of antibodies against Aspergillus fumigatus, suggesting exposure to the fungus. Your doctor will determine if this indicates an active infection, an allergic reaction, or past exposure based on your overall clinical picture.
Who is at risk for Aspergillus infections?
People with weakened immune systems are at highest risk, including those undergoing chemotherapy, organ transplant recipients, patients with HIV/AIDS, and people taking long-term corticosteroids. People with asthma or cystic fibrosis may develop allergic forms of the infection.
  1. 1
    Mayo Clinic - AspergillosisSource
  2. 2
    CDC - AspergillosisSource

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