Patient Igg Testing
Patient Igg Testing - Related Videos
10:32
Generation of Recombinant Human IgG Monoclonal Antibodies from Immortalized Sorted B Cells
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Cited by 7 •
2015
Synthesis of human monoclonal antibodies is the first step in studies aimed at unraveling the pathophysiological mechanisms of auto-antibody-mediated immune responses. We have developed a protocol to generate recombinant human immunoglobulin G (IgG) monoclonal antibodies from blood sorted B cells, including B-cell isolation, antibody cloning and in vitro synthesis.
04:43
COVID-19 Seroprevalence Test for IgG Antibody Levels Among Healthy Donors Across Different Pandemic Phases in Jeddah
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2025
This study assessed COVID-19 seroprevalence in Jeddah, Saudi Arabia, among healthy blood donors across pre-lockdown, during-lockdown, and post-lockdown periods. Of 3,825 samples, 4.5% tested positive for IgG antibodies. Seroprevalence increased significantly post-lockdown, highlighting the role of asymptomatic transmission and the effectiveness of initial restrictions.
09:13
Profiling Anti-Neu5Gc IgG in Human Sera with a Sialoglycan Microarray Assay
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Cited by 35 •
2017
A sialoglycan microarray assay can be used to evaluate anti-Neu5Gc antibodies in human sera, making it a potential high-throughput diagnostic assay for cancer and other chronic inflammation-mediated human diseases.
10:16
Generation of Two-color Antigen Microarrays for the Simultaneous Detection of IgG and IgM Autoantibodies
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Cited by 9 •
2016
We describe here a method to generate customizable antigen microarrays that can be used for the simultaneous detection of serum IgG and IgM autoantibodies from humans and mice. These arrays allow for high-throughput and quantitative detection of antibodies against any antigens or epitopes of interest.
01:15
Transcytosis of IgG
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2023
Transcytosis is the process in which molecules are internalized by endocytosis, transported across the cell, and released through exocytosis from the opposite end of the cell. Molecules such as insulin, immunoglobulins, and certain nutrients are transferred through the recycling endosomes by recycling and transcytosis. IgG molecules from a mother undergo transcytosis starting around 13 weeks of gestation. The amount of IgG transferred and entering the fetal blood circulation increases with...
FAQs
Total IgG and antigen-specific IgG provide different views of antibody status. A total measurement reflects the overall amount of this antibody class in serum, whereas an antigen-specific result focuses on binding to a selected pathogen or other antigen. Considering both can help distinguish a broad humoral immune pattern from reactivity directed toward a particular exposure or vaccine.
Reference values turn an assay result into an interpretable comparison rather than an isolated number. The measured concentration or binding reactivity is assessed against established laboratory values, which helps indicate whether the result falls within the expected range. Interpretation still depends on the testing context, because symptoms, medical history, and other laboratory findings contribute to the clinical conclusion.
Antigen-specific binding can provide evidence that circulating IgG recognizes the antigen examined in the assay. In infection-related work, that reactivity may help investigate previous exposure or an antibody response to vaccination, while total IgG contributes information about overall humoral immune status. Neither result should be interpreted separately from the broader clinical and laboratory picture.
Testing begins with patient serum, which is analyzed in a laboratory assay. The assay measures either IgG concentration or IgG reactivity to selected antigens. Results are then compared with established reference values and reviewed alongside the patient’s symptoms, medical history, and other laboratory findings. This workflow supports interpretation rather than treating the assay result as a standalone diagnosis.
Clinicians can use total IgG results when investigating possible immune dysfunction, including questions about humoral immune status. Pathogen-specific IgG results can add information about previous exposure, while antigen-specific measurements may help assess response to vaccination. Because these possibilities create different interpretive questions, the result is combined with clinical history and other laboratory findings to guide further diagnostic testing.
These measurements allow researchers to characterize antibody-mediated protection by examining both the amount of IgG and its reactivity with selected antigens. The approach can connect laboratory measurements with questions about infection, exposure, vaccination, or immune dysfunction. Results can also help determine when additional diagnostic testing is warranted, especially when interpreted with clinical information rather than viewed in isolation.