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Deprecated Streptococcus pneumoniae Antibody, Serum, Mass Concentration

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

This entry refers to a deprecated serum test that measured antibodies against Streptococcus pneumoniae. Such antibody testing is no longer offered as a routine clinical test under this designation.

Quick summary

["This test has been deprecated and is not part of current standard laboratory practice."]

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

Key facts at a glance

LOINC
24025-9
Short code
Deprecated S pneum8 Ab Ser-mCnc
Synonyms
Deprecated S pneum8 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

What This Test Measured

The test was designed to detect and measure antibodies against Streptococcus pneumoniae, the bacterium that commonly causes pneumonia, sinus infections, and other respiratory infections. The measurement was expressed as a mass concentration in serum.

Why It Is Deprecated

This test has been officially retired from laboratory use. Deprecated tests are typically removed because newer, more reliable methods have replaced them, or because the test did not provide clinically useful information in its original form.

Specimen and Methodology

The specimen was serum, obtained from a standard blood draw. The original method is not clearly specified in the slug, so no specific technique is described here.

What to Do Instead

If your healthcare provider is evaluating your immune response to pneumococcal bacteria or your vaccination status, ask about currently available tests, such as pneumococcal antibody panels that measure responses to specific serotypes.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

Antibody testing against Streptococcus pneumoniae can be relevant when assessing immune function or vaccine response, but the specific deprecated test described here is no longer used in clinical care. Modern evaluations typically use serotype-specific antibody panels. Discuss any concerns with your healthcare provider.

Frequently asked questions

Can I still order this test?
No. This test is marked as deprecated and is not available for clinical use. Your provider can recommend a current alternative if antibody testing is needed.
What does "mass concentration" mean in this context?
Mass concentration refers to the amount of antibody measured per volume of serum, such as micrograms per milliliter. It is simply a way of expressing how much of the substance is present.
Should I be worried if I previously had this test?
No. A deprecated test simply means it is no longer used going forward. Any prior results should be interpreted by your healthcare provider in the context of your health at that time.
  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