Typhidot is a medical test consisting of a dot ELISA kit[1] that detects IgM and IgG antibodies against the outer membrane protein (OMP) of the Salmonella typhi.
The typhidot test becomes positive within 2–3 days of infection and separately identifies IgM and IgG antibodies.
The test is based on the presence of specific IgM and IgG antibodies to a specific 50Kd OMP antigen, which is impregnated on nitrocellulose strips.
The most important limitation of this test is that it is not quantitative and result is only positive or negative hhj8b .
Whereas a detailed Widal test can tell the titres of specific antibodies.