Typhidot Typhidot is based on the presence of specific IgM and IgG antibodies to a specific 50Kd OMP antigen. This test is carried out on a cellulose nitrate membrane where a specific S. typhi outer membrane protein is attached as fixed test lines. It separately identifies IgM and IgG antibodies. IgM shows recent infection; IgG signifies remote infection.
Typhidot Typhidot is based on the presence of specific IgM and IgG antibodies to a specific 50.Kd OMP antigen. This test is carried out on a cellulo.se nitrate membrane where a specific S typhi outer membrane protein is attached as fixed test lines I.t separately identifies IgM and IgG antibodies IgM shows recent infection; IgG signifies remote infection.