Typhoid (IgG+IgM) Antibody Test Kit

The Typhoid (IgG+IgM) Antibody Test is a qualitative one-step immuno-chromatographic assay. The strip components consist of a magenta-coloured conjugate pad containing Typhoid antigen with colloidal gold, and a nitrocellulose membrane strip containing two test lines — IgM (T1) and IgG (T2) — and a control line (C). The T1 band is pre-coated with monoclonal Anti-Human IgM and the T2 band with monoclonal Anti-Human IgG; the C band is pre-coated with control line antibody. When an adequate volume of specimen or sample extraction buffer is dispensed into the sample well, it migrates by capillary action across the cassette. Anti-S. typhi IgM, if present, binds at the T1 line and anti-S. typhi IgG at the T2 line, forming magenta coloured bands that indicate a positive result. Absence of a coloured band in the test region indicates a non-reactive result. The control region must always develop a coloured line; otherwise the result is invalid and the specimen must be retested with another device.