S. botryosum-Specific IgG Antibody, Radioallergosorbent (RAST), Qualitative (Deprecated Test)
A qualitative antibody test that detects IgG binding to S. botryosum antigen using RAST methodology. This is a deprecated test.
["A positive result shows detectable IgG antibodies to S. botryosum, which may reflect prior exposure but does not by itself confirm active disease."]
Key facts at a glance
- LOINC
- 33315-3
- Short code
- Deprecated S botryosum IgG RAST Ql
- Synonyms
- Deprecated S botryosum 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 laboratory test checks a patient sample for IgG antibodies that bind to an antigen from S. botryosum, an organism designation used without a more specific genus in the test order. RAST is an older laboratory method for detecting antigen-specific antibodies.
Why might I need this test?
This test may have been used to investigate a possible immune response to S. botryosum. It is now marked as deprecated, so the test may not be available or may have been replaced by a newer or more specific laboratory method.
How is the test performed?
The laboratory combines the patient sample with S. botryosum antigen and uses RAST methodology to determine whether specific IgG is present. Because the result is qualitative, it is generally reported as positive or negative rather than as a measured concentration.
How do I prepare for the test?
No special preparation is usually required for this type of antibody test, although the specimen and instructions should be confirmed with the ordering clinician or laboratory. If a blood sample is required, avoid eating or drinking only if the laboratory specifically instructs you to do so.
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 IgG antibodies capable of binding S. botryosum antigen were detected. This may indicate previous exposure, infection, vaccination, or cross-reactivity with a related antigen, and it does not by itself establish active disease. A negative result means that such antibodies were not detected; interpretation depends on the timing of the suspected exposure and the clinical situation.
Short name
S. botryosum IgG RAST
Frequently asked questions
Does a positive result mean I currently have an S. botryosum infection?
Why is this test listed as deprecated?
What does a negative result mean?
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