Helminthosporium iger Antigen, Qualitative (Deprecated Test)
A qualitative test that looks for Helminthosporium iger antigen in a submitted specimen. This deprecated test may be used in selected cases of suspected fungal exposure or infection.
["A positive result suggests the fungal antigen is present, but it must be interpreted alongside symptoms and other fungal tests."]
Key facts at a glance
- LOINC
- 15768-5
- Short code
- Deprecated Helminthosporium IgE RAST Ql
- Synonyms
- Deprecated Helminthosporium IgE RAST Ql
- Category
- liver
- Sample
- serum
- Container
- Red-top tube (SST)
- Units
- N/A
- Ref low
- 10
- Ref high
- 40
- Critical range
- — – 500 N/A
- Fasting
- false
- Population
- adult
- Sex
- all
- Age range
- 18–65 years
- CPT
- 84484
- SNOMED
- 302774002
- 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?
This is a qualitative laboratory test that checks a submitted sample for antigen from Helminthosporium iger, a fungal organism. The result is reported as detected or not detected. The encoded test name does not identify the specimen or laboratory method.
Why might I need this test?
This test may be considered when a clinician is evaluating suspected fungal exposure or infection, particularly when symptoms or other findings suggest that a mold-related illness is possible. It is not by itself a general allergy test.
How is the test performed?
A laboratory analyzes the submitted specimen using a method appropriate for qualitative antigen detection. The report indicates whether antigen from Helminthosporium iger was detected in the sample.
How do I prepare for the test?
Preparation depends on the specimen and method required by the laboratory, which are not clear from the encoded test name. Follow the ordering clinician's or laboratory's instructions and ask whether fasting, medication changes, or timing are relevant.
Reference range
Adult: 10-40 U/LN/A
No special preparation required. Avoid fatty meals before the test if possible.
Clinical interpretation
How abnormal results are interpreted and what conditions they suggest.
A positive result means that antigen from the fungal organism was detected and may support fungal exposure or infection in the appropriate clinical setting. It does not independently establish that the organism is causing the person's symptoms. A negative result does not completely exclude infection, particularly if collection was delayed or the organism burden was low.
Short name
Helminthosporium iger antigen test
Frequently asked questions
What does a positive result mean?
Does a negative result rule out a fungal infection?
Why is this test listed as deprecated?
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 17, 2026. · Read our editorial policy