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Fusarium moniliforme IgG Antibody, Radioallergosorbent Test (RAST) — Qualitative

Published: August 9, 2026Updated: August 17, 2026

A qualitative blood test that detects IgG antibodies to Fusarium moniliforme, a mold, using a radioallergosorbent method.

Quick summary

["A positive result suggests that your immune system has been exposed to Fusarium moniliforme."]

Medically reviewed by WellAlly Editorial TeamLast reviewed August 17, 2026Editorial policy

Key facts at a glance

LOINC
33286-6
Short code
Deprecated F moniliforme IgG RAST Ql
Synonyms
Deprecated F moniliforme IgG 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 test looks for IgG antibodies against Fusarium moniliforme, a type of mold. It is a qualitative test, so the result is reported as positive or negative.

Why might I need this test?

It may be ordered when a mold allergy or other immune-related symptoms are suspected and exposure to Fusarium moniliforme needs to be evaluated.

How is the test performed?

A blood sample is analyzed in the laboratory using a radioallergosorbent method to detect antibodies to the mold. The laboratory reports whether specific IgG antibodies were detected.

How do I prepare for the test?

No special preparation is usually required. Follow any instructions from the laboratory and tell your clinician about allergies, recent mold exposure, and medications that could affect the results.

Reference range

Adult: 10-40 U/LN/A

Specimen: serum

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 indicates that IgG antibodies to Fusarium moniliforme are present, which may reflect previous exposure or sensitization. It does not by itself prove that the mold is causing current symptoms or a clinical allergy. A negative result does not completely exclude exposure, and results should be interpreted with your symptoms, history, and other allergy tests.

Short name

Fusarium moniliforme IgG (RAST)

Frequently asked questions

What does a positive result mean?
It means that specific IgG antibodies to Fusarium moniliforme were detected in your blood. This can suggest prior exposure but does not establish that the mold is responsible for your symptoms.
Does a positive result mean I have a mold allergy?
Not necessarily. IgG antibodies generally indicate exposure or immune recognition, so your clinician will consider the result along with your symptoms and medical history.
Can this test rule out Fusarium moniliforme exposure?
No. A negative result means the antibodies were not detected at the time of testing, but it cannot completely rule out exposure or explain symptoms.
  1. 1
    MedlinePlus — Laboratory TestsSource
  2. 2
    Lab Tests OnlineSource
  3. 3
    Mayo Clinic — Tests & ProceduresSource

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 17, 2026. · Read our editorial policy