Clove-Specific IgG Antibody, Radioallergosorbent Test (RAST) — Qualitative
A qualitative blood test that detects antibodies your immune system has made against clove. It may indicate prior exposure but does not by itself diagnose clove allergy.
["A positive result shows clove-specific IgG, which generally reflects immune exposure rather than proving an allergy."]
Key facts at a glance
- LOINC
- 21205-0
- Short code
- Deprecated Clove IgG RAST Ql
- Synonyms
- Deprecated Clove 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 qualitative blood test looks for clove-specific IgG antibodies. These antibodies are part of the immune system's response to exposure and are sometimes measured when a reaction related to clove or a food containing it is being evaluated.
Why might I need this test?
A clinician may order this test after symptoms such as hives, swelling, gastrointestinal discomfort, or another possible reaction following clove exposure. The result is reviewed with your symptoms, exposure history, and other allergy testing.
How is the test performed?
A blood sample is collected and analyzed using a radioallergosorbent testing method, commonly called RAST. Because this is a qualitative test, the report indicates whether clove-specific IgG was detected rather than providing a measured concentration.
How do I prepare for the test?
No special preparation is usually required, although you should follow any instructions provided by the laboratory or ordering clinician. Tell your clinician about your symptoms, recent clove exposure, other allergies, and any medicines that affect your immune system.
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 clove-specific IgG is present and may reflect prior exposure or an immune response. Specific IgG results do not reliably distinguish harmless sensitization from a symptomatic allergy. A negative result does not completely exclude clove allergy, so the result must be interpreted with your clinical history and, when appropriate, additional allergy testing.
Short name
Clove-specific IgG antibody (RAST)
Frequently asked questions
Does a positive result mean I am allergic to clove?
What is the difference between this test and a clove-specific IgE test?
How should I use the test 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