Acremoniumiggrast
This blood test detects IgG antibodies against Acremonium mold species to help diagnose fungal exposure or allergic reactions.
{"Measures IgG antibodies against Acremonium mold in your blood","Helps doctors determine if you have been exposed to this specific fungus","Used to diagnose fungal allergies or hypersensitivity pneumonitis","A simple blood draw is all that is needed","Results help guide treatment for mold-related conditions"}
Key facts at a glance
- LOINC
- 102986-7
- Short code
- ACRIGG
- Synonyms
- Acremonium IgG RAST
- Category
- chemistry
- Sample
- serum
- Container
- Serum separator tube (SST) or red top vacuum tube
- Units
- N/A
- Ref low
- 0
- Ref high
- 3.5
- Critical range
- — – 500 N/A
- Fasting
- false
- Population
- adult
- Sex
- all
- Age range
- 0–120 years
- Method
- Radioallergosorbent test (RAST)
- CPT
- 86003
- SNOMED
- 414558006
- Specimen volume
- 1.0 mL minimum, 2.0 mL preferred
- Stability
- Room temperature: 24 hours; Refrigerated (2-8°C): 7 days; Frozen (-20°C or below): 30 days
- Hemolysis max
- 50
- Lipemia max
- 100
- Icterus max
- 20
- TAT
- 48–168 hours
- Order
- routine
What is this test?
The Acremonium sp. IgG Antibody test is a blood test that looks for IgG antibodies specifically directed against Acremonium species, which are types of mold commonly found in soil, decaying plants, and indoor environments. The test uses a method called Radioallergosorbent test (RAST) to detect whether your immune system has produced antibodies in response to exposure to this fungus.
Why might I need this test?
Your doctor may order this test if you have symptoms that suggest a fungal allergy or infection, such as chronic cough, shortness of breath, fatigue, fever, or unexplained allergic symptoms. It is particularly useful for diagnosing conditions like allergic bronchopulmonary aspergillosis or hypersensitivity pneumonitis (also known as "farmer's lung" or "bird fancier's lung"), which can be caused by repeated exposure to moldy environments.
How is the test performed?
A healthcare professional will draw a small sample of blood from a vein in your arm. The blood sample is then sent to a laboratory where it is analyzed using the RAST method. This test measures the presence and quantity of IgG antibodies specific to Acremonium species. No special preparation is typically needed before the test.
What do the results mean?
A positive result indicates that IgG antibodies against Acremonium were detected in your blood, suggesting past or current exposure to this mold. A negative result means no significant levels of antibodies were found. Your doctor will interpret these results along with your symptoms, medical history, and other test results to make a diagnosis and determine appropriate treatment.
Reference range
Negative: < 2.0 kU/L (Class 0); Equivocal: 2.0-3.5 kU/L (Class 1); Positive: > 3.5 kU/L (Class 2-6)N/A
No special preparation required. Patient may eat and drink normally before specimen collection. Inform the laboratory of any current medications, especially antihistamines or immunosuppressants, as these may affect results.
Clinical interpretation
How abnormal results are interpreted and what conditions they suggest.
◆Associated findings1
Frequently asked questions
Is this test painful?
Do I need to fast before this test?
What is Acremonium mold?
How long does it take to get results?
What happens if my test is positive?
Sources
- 1
- 2
- 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 17, 2026. · Read our editorial policy