Serotype-Specific Antibody Response to Pneumococcal Serotypes (Serum Immunoglobulin Levels)
This test measures your immune system’s response to different strains of *Streptococcus pneumoniae* (pneumococcus) bacteria by detecting antibodies in your serum. It helps assess protection against specific serotypes, often used in research or specialized immune monitoring.
["This test evaluates how your body recognizes and fights common pneumonia-causing bacteria strains."]
Key facts at a glance
- LOINC
- 42361-6
- Short code
- S pneum 12 serotypes IgG Pnl Ser-mCnc
- Synonyms
- S pneum 12 serotypes IgG Pnl Ser-mCnc
- Category
- coagulation
- Sample
- serum
- Container
- Red-top tube (SST)
- Units
- N/A
- Fasting
- false
- Population
- adult
- Sex
- all
- Age range
- 18–65 years
- CPT
- 82784
- 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
Why This Test Is Done
Your healthcare provider may order this test if you have a history of recurrent infections, immune disorders, or if you’re being studied for vaccine efficacy. It can also help monitor immune function in certain conditions, such as after vaccination or in people with weakened immune systems.
What to Expect Before the Test
No special preparation is needed. A blood sample will be drawn from a vein, usually in your arm. The blood is processed to separate serum, which is then tested for antibodies against specific pneumococcal serotypes.
What the Results Mean
Results show the presence and level of antibodies against each pneumococcal serotype. Higher levels indicate a stronger immune response to that strain. Interpretation depends on clinical context, such as vaccination history or symptoms.
Common Uses and Limitations
This test is primarily used in research, clinical trials, or specialized settings to study immune responses. It’s not a routine diagnostic tool for pneumonia or infections. Results alone don’t diagnose illness but may support broader immune assessments.
Clinical interpretation
How abnormal results are interpreted and what conditions they suggest.
Clinical Significance
Short name
Pneumococcal Antibody Profile
Frequently asked questions
How long will it take to get my results?
What if my antibody levels are low?
Does this test replace a standard pneumonia screening?
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 16, 2026. · Read our editorial policy