Rheumatoid Factor, ABS Quantitative

Code

5421

Principle

The sera of most rheumatoid arthritic patients will react with human IgG and the IgG of other animals due to the presence of an immunoglobulin (in most cases of the IgM type) known as rheumatoid factor. During this reaction, which is of the antigen-antibody type, rheumatoid factor acts as an anti-IgG antibody. Positive tests, indicating the existence of rheumatoid factor, may be decisive for the diagnosis of rheumatoid arthritis in patients with inflammatory arthritis.

Preanalytical

1 mL Serum Refrigerated

Turn Around Time

1 day

Methodology

Turbidimetry