Coconut-Specific IgG Antibody, Qualitative — RAST (Deprecated)
A qualitative RAST test for coconut-specific IgG antibodies. This deprecated test may indicate prior immune exposure but does not, by itself, diagnose coconut allergy.
["This test looks for coconut-specific IgG antibodies, but a positive result alone does not confirm a coconut allergy."]
Key facts at a glance
- LOINC
- 21212-6
- Short code
- Deprecated Coconut IgG RAST Ql
- Synonyms
- Deprecated Coconut 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 blood test uses a RAST-type laboratory method to look for IgG antibodies directed against coconut. The result is reported qualitatively, generally as detected or not detected. The test has been deprecated, so its availability and clinical use may be limited.
Why might I need this test?
It may have been ordered to evaluate immune exposure to coconut or investigate a suspected food-related reaction. However, coconut-specific IgG testing is not generally used to diagnose immediate food allergy, and results should be interpreted with your symptoms and medical history.
How is the test performed?
A blood sample, usually serum, is analyzed for antibodies that bind coconut allergens. Because the result is qualitative, it shows whether coconut-specific IgG was detected rather than providing a measured concentration.
How do I prepare for the test?
No special preparation is usually required unless your ordering clinician gives different instructions. Tell the clinician about coconut exposure, allergic symptoms, and any immune-suppressing medicines you are taking.
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.
Detected coconut-specific IgG may reflect previous exposure or a general immune response to coconut; it does not by itself indicate an allergy. A not-detected result does not exclude coconut allergy or reaction. Diagnosis of food allergy generally depends on the clinical history and, when appropriate, skin-prick testing or testing for allergen-specific IgE rather than IgG.
Short name
Coconut IgG (RAST), Qualitative
Frequently asked questions
Does a positive result mean I am allergic to coconut?
Is this the same as a coconut-specific IgE test?
Why does the test name say it is 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