White-Faced Hornet Venom-Specific IgG, Qualitative (RAST; Deprecated)
A qualitative blood test that detects IgG antibodies against white-faced hornet venom, indicating prior immune exposure rather than a confirmed sting allergy.
["A positive result shows prior exposure to white-faced hornet venom but does not by itself diagnose a venom allergy."]
Key facts at a glance
- LOINC
- 44315-0
- Short code
- Deprecated Whitefaced Hornet IgG RAST Ql
- Synonyms
- Deprecated Whitefaced Hornet 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 venom-specific IgG antibodies to the white-faced hornet in blood. These antibodies can develop after exposure to the insect or its venom. This test is marked deprecated and may be used only for historical or specialized purposes.
Why might I need this test?
A clinician might order it when there is concern about previous exposure, particularly after repeated stings or occupational contact with white-faced hornets. It may help document immune exposure, but it cannot determine the severity of a possible allergic reaction.
How is the test performed?
A blood sample is tested in the laboratory using the qualitative RAST method to look for antibodies that bind white-faced hornet venom components. The result is generally reported as positive or negative rather than with a numerical concentration.
How do I prepare for the test?
No fasting or special preparation is usually required. Tell your clinician about recent hornet stings, allergic reactions, infections, or medicines that affect the immune system because these factors may influence antibody results.
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 indicates that IgG antibodies to white-faced hornet venom are present, which is consistent with previous exposure. It does not prove that a person will have an allergic reaction to a future sting. Results should be interpreted with the exposure history and any symptoms, and a venom-specific IgE test or allergy evaluation may be more appropriate when a true sting allergy is suspected.
Short name
White-faced hornet venom IgG
Frequently asked questions
Does a positive result mean I am allergic to white-faced hornets?
Why is this test called deprecated?
Can recent insect stings affect the result?
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