The rheumatoid factor latex slide test incorporates diluted patient's serum and latex coated with which component?

The rheumatoid factor latex slide test incorporates diluted patient's serum and latex coated with which component?

• A. Monoclonal antibodies
• B. Antihuman globulin (AHG)
• C. Complement proteins
• D. Digits of serum albumin

Answer: (B)

In the rheumatoid factor latex slide test, the latex particles used are typically coated with human immunoglobulin (IgG). This is significant because rheumatoid factor is an antibody (usually IgM) that targets the Fc portion of human IgG. When the diluted patient’s serum is added to the latex that is coated with IgG, any rheumatoid factor present in the serum will bind to the IgG on the latex particles, leading to agglutination, which can be visually assessed. The correct association here is that antihuman globulin (AHG) would be utilized to enhance the test or as part of the indirect Coombs test; however, in the context of the rheumatoid factor test specifically, the latex is customized to react with human IgG. This context clarifies that while AHG has a role in immunoassays, it is the human IgG coating on the latex particles that is essential for detecting rheumatoid factor presence in patient serum. Other options do not apply in this context. Monoclonal antibodies are specialized antibodies but are not typically used in the latex slide test for rheumatoid factor. Complement proteins are part of the immune response but are unnecessary for this specific assay. Lastly, digits of serum albumin have no relevance in this

In the rheumatoid factor latex slide test, the latex particles used are typically coated with human immunoglobulin (IgG). This is significant because rheumatoid factor is an antibody (usually IgM) that targets the Fc portion of human IgG. When the diluted patient’s serum is added to the latex that is coated with IgG, any rheumatoid factor present in the serum will bind to the IgG on the latex particles, leading to agglutination, which can be visually assessed.

The correct association here is that antihuman globulin (AHG) would be utilized to enhance the test or as part of the indirect Coombs test; however, in the context of the rheumatoid factor test specifically, the latex is customized to react with human IgG. This context clarifies that while AHG has a role in immunoassays, it is the human IgG coating on the latex particles that is essential for detecting rheumatoid factor presence in patient serum.

Other options do not apply in this context. Monoclonal antibodies are specialized antibodies but are not typically used in the latex slide test for rheumatoid factor. Complement proteins are part of the immune response but are unnecessary for this specific assay. Lastly, digits of serum albumin have no relevance in this