Streptococcus Pneumoniae Type 12F Capsular Polysaccharide Antigen
Streptococcus pneumoniae Type 12f Capsular Polysaccharide Antigen is a purified polysaccharide component derived from the outer capsule of S. pneumoniae serotype 12F. This antigen is used in diagnostic testing to detect or measure antibodies against pneumococcal serotype 12F, or as a component in pneumococcal vaccines. It works by stimulating or detecting immune responses specific to this particular pneumococcal serotype.
A pneumococcal antigen used for serotype-specific diagnostic testing or vaccine formulation.
Key facts at a glance
- RxNorm
- 854936
- Generic
- Streptococcus Pneumoniae Type 12f Capsular Polysaccharide Antigen
- Class
- unclassified
- Brands
- Pneumovax 23
- Availability
- rx
- Lactation
- unknown
- Routes
- —
- Forms
- prefilled syringe, injection, solution
- Regions
- US, EU, CN, JP
- Monitoring
- —
This page is for informational purposes only.
Do not use this information to diagnose yourself or to replace a physician's advice. Always consult a qualified healthcare provider before starting, stopping, or changing any medication. If you believe you are experiencing a medical emergency, call your local emergency number immediately.
Used for serological testing to determine immunity or exposure to Streptococcus pneumoniae serotype 12F, or as a component in pneumococcal polysaccharide vaccines. May be used in epidemiological surveillance and vaccine efficacy studies.
The capsular polysaccharide antigen triggers an immune response when used in vaccines, stimulating production of type-specific antibodies. In diagnostic applications, it is used to detect existing antibodies against serotype 12F in patient serum samples.
This is a serotype-specific antigen; pneumococcus has over 90 serotypes with distinct polysaccharide capsules. Use requires proper laboratory handling and clinical context. As a biological component, it may cause hypersensitivity reactions in sensitized individuals. Administration should follow established protocols for diagnostic or vaccine products.
Official drug label
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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 31, 2026. · Read our editorial policy