Rheumatoid factor can also be a cryoglobulin ( antibody that precipitates on cooling of a blood sample ); it can be either type 2 ( monoclonal IgM to polyclonal IgG ) or type 3 ( polyclonal IgM to polyclonal IgG ) cryoglobulin.
2.
Rheumatoid factor can also be a cryoglobulin ( antibody that precipitates on cooling of a blood sample ); it can be either type 2 ( monoclonal IgM to polyclonal IgG ) or type 3 ( polyclonal IgM to polyclonal IgG ) cryoglobulin.