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Official Description

Streptococcus pneumoniae antibody (IgG), serotypes, multiplex immunoassay, quantitative

© Copyright 2026 American Medical Association. All rights reserved.

Common Language Description

A Streptococcus pneumoniae antibody (IgG), serotypes, multiplex immunoassay is a diagnostic test designed to evaluate the immune response to various serotypes of the bacterium Streptococcus pneumoniae, which is known to be a significant cause of pneumonia, sepsis, and meningitis. This test specifically measures the levels of immunoglobulin G (IgG) antibodies in the blood serum that are directed against multiple serotypes of the pathogen. The multiplex nature of the immunoassay allows for the simultaneous analysis of several serotypes, providing a comprehensive overview of the patient's immune response. The test is particularly useful in monitoring the effectiveness of pneumococcal vaccination, as it helps determine whether the vaccine has successfully stimulated the production of antibodies. Additionally, it can be employed to assess humoral immunodeficiency, a condition where the body’s ability to produce antibodies is compromised. The procedure involves collecting a blood serum sample, which is then subjected to a microsphere photometry test or bead-based multiplex immunoassay. In this process, the pneumococcal target antigens are attached to magnetic beads that capture the specific antibodies present in the serum. Following this, an anti-human IgG antibody is introduced to identify and quantify the bound antibodies and antigens, thereby allowing for the assessment of the patient's immune response to the pathogen. The results of this test are quantitatively expressed, with values greater than 270 mcg/mL indicating a robust vaccine response, while values below 9.7 mcg/mL suggest inadequate antibody production.

© Copyright 2026 Coding Ahead. All rights reserved.

1. Indications

The Streptococcus pneumoniae antibody (IgG), serotypes, multiplex immunoassay is indicated for the following conditions:

  • Monitoring Vaccine Response This test is utilized to assess the antibody response in patients who have received a pneumococcal vaccine, ensuring that the vaccine has effectively stimulated the immune system.
  • Evaluation of Humoral Immunodeficiency It is employed to investigate potential humoral immunodeficiency, a condition characterized by the body's inability to produce adequate antibodies, which can lead to increased susceptibility to infections.

2. Procedure

The procedure for conducting the Streptococcus pneumoniae antibody (IgG), serotypes, multiplex immunoassay involves several key steps:

  • Sample Collection A blood serum sample is collected from the patient, which serves as the basis for the immunoassay. This sample is crucial for the subsequent analysis of antibody levels.
  • Preparation of Magnetic Beads The pneumococcal target antigens are bound to magnetic beads. These beads are specifically designed to capture the IgG antibodies present in the serum sample.
  • Incubation The serum sample is then incubated with the magnetic beads, allowing the antibodies in the serum to bind to the antigens on the beads. This step is essential for the accurate detection of the antibodies.
  • Addition of Anti-Human IgG Antibody After incubation, an anti-human IgG antibody is added to the mixture. This antibody binds to the antibodies that are already attached to the beads, facilitating their identification and quantification.
  • Quantification The bound antibodies and antigens are quantified using a microsphere photometry test or bead-based multiplex immunoassay. This quantification provides a measure of the immune response to the various serotypes of Streptococcus pneumoniae.

3. Post-Procedure

Post-procedure care for the patient is generally minimal, as the test is non-invasive and involves only a blood draw. Patients may be advised to hydrate adequately and can typically resume normal activities immediately following the procedure. Results from the immunoassay will be analyzed and reported, indicating the levels of IgG antibodies present. A result greater than 270 mcg/mL suggests a strong immune response to the pneumococcal vaccine, while a result below 9.7 mcg/mL indicates poor antibody production, which may necessitate further clinical evaluation or intervention.

Short Descr STRPTCS PNEUM ANTB SEROT IA
Medium Descr STRPTCS PNEUM ANTIBODY IGG SEROTYPES MLT IA QUAN
Long Descr Streptococcus pneumoniae antibody (IgG), serotypes, multiplex immunoassay, quantitative
Status Code Statutory Exclusion (from MPFS, may be paid under other methodologies)
Global Days XXX - Global Concept Does Not Apply
PC/TC Indicator (26, TC) 9 - Not Applicable
Multiple Procedures (51) 9 - Concept does not apply.
Bilateral Surgery (50) 9 - Concept does not apply.
Physician Supervisions 09 - Concept does not apply.
Assistant Surgeon (80, 82) 9 - Concept does not apply.
Co-Surgeons (62) 9 - Concept does not apply.
Team Surgery (66) 9 - Concept does not apply.
Diagnostic Imaging Family 99 - Concept Does Not Apply
CLIA Waived (QW) No
APC Status Indicator Conditionally packaged laboratory tests
Type of Service (TOS) 5 - Diagnostic Laboratory
Berenson-Eggers TOS (BETOS) none
MUE Not applicable/unspecified.
Date
Action
Notes
2025-01-01 Added Code Added.
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