Pneumococcal Antibody Serum Quantitative (by Titration Method) - Confirmatory
This test measures the level of antibodies in your blood that target *Streptococcus pneumoniae* (pneumococcus), a common bacteria linked to pneumonia, meningitis, and other infections.
["It helps determine if your immune system has produced antibodies against pneumococcus, which may indicate past infection or immunity status."]
Key facts at a glance
- LOINC
- 24237-0
- Short code
- M pneumo Ab sp2 Titr Ser CF
- Synonyms
- M pneumo Ab sp2 Titr Ser CF
- Category
- chemistry
- Sample
- serum
- Container
- Red-top tube (SST)
- Units
- N/A
- Fasting
- false
- Population
- adult
- Sex
- all
- Age range
- 18–65 years
- Method
- comp-fix
- 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 Might Be Ordered
Your healthcare provider may recommend this test if you’ve had recent symptoms of pneumonia, meningitis, or other pneumococcal infections, or if you’re at higher risk (e.g., due to age, weakened immune system, or chronic health conditions). It could also be used to confirm immunity after vaccination or evaluate exposure.
What to Expect Before the Test
No special preparation is needed. You’ll provide a blood sample drawn from a vein, typically in a clinic or lab. The sample is processed to measure antibody levels using a titration method, which compares antibody amounts to a standard.
What the Results Mean
Results are qualitative (present/absent) or quantitative (measured in arbitrary units), showing whether antibodies are detected. High levels may suggest past infection or vaccination, while low or absent levels may indicate no immunity.
Common Reasons for Testing
This test is often used to diagnose or monitor pneumococcal infections, assess vaccination effectiveness, or guide preventive measures in high-risk individuals.
Clinical interpretation
How abnormal results are interpreted and what conditions they suggest.
Elevated antibody levels against pneumococcus can confirm past infection or vaccination success. However, antibody presence alone doesn’t guarantee protection against future infections—other factors (like vaccination status) also play a role. Low or absent levels may require additional preventive strategies, such as vaccination or prophylactic antibiotics in high-risk scenarios.
Short name
Pneumococcal Antibody Serum (Confirmatory)
Frequently asked questions
How long will I need to wait for results?
What does a positive result mean for my health?
Can I get this test at home?
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