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Antibody to Streptococcus pneumoniae (Mass Concentration)

Published: August 9, 2026Updated: August 16, 2026

This test measures the amount of antibodies your body produces in response to the bacteria *Streptococcus pneumoniae*, which can cause serious infections like pneumonia.

Quick summary

["Helps identify past or current exposure to pneumonia-causing bacteria."]

Medically reviewed by WellAlly Editorial TeamLast reviewed August 16, 2026Editorial policy

Key facts at a glance

LOINC
26876-3
Short code
Deprecated S pneum 1 Ab Ser-mCnc
Synonyms
Deprecated S pneum 1 Ab 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
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 symptoms of pneumonia, have a weakened immune system, or are at higher risk for infections. It can also help diagnose conditions like invasive pneumococcal disease or guide vaccination decisions.

What to Expect Before the Test

No special preparation is needed. You’ll provide a blood sample, usually drawn from a vein in your arm. The test is quick and typically done in a lab setting.

What the Results Mean

Results show whether your body has detected *Streptococcus pneumoniae* antibodies. High levels may indicate past infection or vaccination. Low or absent levels suggest no prior exposure.

Common Uses and Limitations

This test helps confirm exposure but isn’t used to diagnose active infections. It’s most useful for monitoring immune response after vaccination or evaluating risk in high-risk patients.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

Clinical Significance: Understanding Your Results

Short name

Strep Pneumonia Antibody (Serum)

Frequently asked questions

Could I get this test if I’m pregnant?
Yes, this test is generally safe during pregnancy. However, discuss any concerns with your healthcare provider, as they may adjust recommendations based on your specific situation.
What if my results are positive but I don’t feel sick?
Positive results may mean you’ve had a past infection or received a vaccine. Some people develop antibodies without symptoms. Follow up with your provider to discuss next steps.
Can this test detect recent infections?
This test measures antibodies, which develop after infection or vaccination. It’s not designed to detect active infections in real-time but can help assess long-term exposure.
  1. 1
    MedlinePlus — Laboratory TestsSource
  2. 2
    Lab Tests OnlineSource
  3. 3
    Mayo Clinic — Tests & ProceduresSource

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.

Medical Disclaimer

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