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Aflavusiggsermcnc

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

This blood test measures IgG antibodies against Aspergillus flavus, a type of fungus that can cause respiratory infections.

Quick summary

{"Detects IgG antibodies to Aspergillus flavus fungus in blood","Helps diagnose aspergillosis, a fungal infection affecting lungs","Important for patients with weakened immune systems","Results indicate past or current infection","No special preparation needed before the test"}

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

Key facts at a glance

LOINC
99476-4
Short code
A flavus IgG Ser-mCnc
Synonyms
A flavus IgG Ser-mCnc
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 flavus IgG antibody test is a blood test that detects IgG antibodies against Aspergillus flavus, a common mold found in soil, decaying plants, and grains. When your immune system encounters this fungus, it produces IgG antibodies as part of its defense response. This test measures these specific antibodies in your blood to help determine if you have been exposed to or infected by Aspergillus flavus.

Why do I need this test?

Your doctor may order this test if you have symptoms of a respiratory infection that hasn't responded to standard treatments, especially if you have a weakened immune system. People with conditions like asthma, cystic fibrosis, or those who have had organ transplants or are on immunosuppressive medications are at higher risk for fungal infections. This test helps your healthcare provider determine if your symptoms are caused by an Aspergillus infection.

What happens during the test?

A healthcare professional will draw a small blood sample from a vein in your arm. The procedure is quick and usually takes less than a minute. You may feel a slight sting when the needle is inserted. The blood sample is then sent to a laboratory where it is analyzed for the presence of IgG antibodies against Aspergillus flavus.

Understanding your results

A positive result means that IgG antibodies to Aspergillus flavus were detected in your blood. This could indicate: a current active infection, a past infection that has resolved, or colonization (where the fungus is present but not causing active disease). A negative result means no antibodies were detected, which could mean you have not been exposed to the fungus, or the infection is very recent and antibodies haven't developed yet. Your doctor will interpret these results in context with your symptoms and other test findings.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

◆Associated findings1

Frequently asked questions

Do I need to fast before this test?
No, you do not need to fast before this test. You can eat and drink normally before having your blood drawn.
Are there any risks with this test?
The risks are minimal and similar to any blood test. You may experience slight bruising, soreness, or bleeding at the injection site. These side effects usually resolve quickly.
How long does it take to get results?
Results typically take 2-5 days, depending on the laboratory. Your healthcare provider will contact you with the results or discuss them at your follow-up appointment.
What happens if my test is positive?
A positive result does not always mean you have an active infection that requires treatment. Your doctor will evaluate your symptoms, medical history, and other test results to determine if treatment is needed. Antifungal medications may be prescribed if an active infection is confirmed.
Can this test detect all types of Aspergillus infections?
This specific test detects antibodies to Aspergillus flavus only. Other Aspergillus species may cause similar infections, so your doctor may order additional tests if needed.
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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