: Deprecated Streptococcus pneumoniae Serotype 19 IgG Antibody, Serum (Arbitrary Concentration)
: This slug refers to a test that measures IgG antibodies against Streptococcus pneumoniae serotype 19 in serum, but the entry is marked deprecated and should not be ordered or reported.
[": This is a deprecated test entry for pneumococcal serotype 19 IgG and is not intended for current clinical use."]
Key facts at a glance
- LOINC
- 9457-3
- Short code
- Deprecated S pneum19 IgG Ser IA-aCnc
- Synonyms
- Deprecated S pneum19 IgG Ser IA-aCnc
- Category
- coagulation
- Sample
- serum
- Container
- Red-top tube (SST)
- Units
- N/A
- Fasting
- false
- Population
- adult
- Sex
- all
- Age range
- 18–65 years
- Method
- ia
- 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
: What This Test Measured
: The test was designed to detect and quantify IgG antibodies directed against the capsular polysaccharide of Streptococcus pneumoniae serotype 19 in a serum sample. Antibody results were typically expressed in arbitrary concentration units rather than a standardized mass or substance concentration.
: Why It Is Deprecated
: The "deprecated" prefix indicates the test code has been retired, replaced, or withdrawn from active use. Deprecated entries may reflect method changes, updated LOINC mappings, or assays no longer offered, so results tied to this slug should not be interpreted or reported as current findings.
: Specimen and Method Considerations
: The specimen was serum, and the result type was an arbitrary-unit antibody concentration, not a mass or substance concentration. Because the exact assay platform and calibration are not specified in the slug, no numeric reference ranges or cutoffs can be responsibly provided.
: How Pneumococcal Antibody Testing Fits In
: Pneumococcal antibody testing, when performed, is generally used to assess humoral immune response to pneumococcal capsular polysaccharides, often before and after vaccination. Interpretation depends on the specific serotypes tested, the assay method, and the patient's vaccination and clinical history.
Clinical interpretation
How abnormal results are interpreted and what conditions they suggest.
: This deprecated entry has no current clinical significance for decision-making. Any historical or archived result that references this code should be interpreted with caution and confirmed against the currently validated assay and reporting code, because arbitrary-unit antibody assays are not interchangeable across platforms or laboratories.
Short name
: NONE
Frequently asked questions
: Can I still order this test?
: What does "IgG serotype 19" mean?
: Why are there no reference ranges listed?
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