Typhoid IgG ELISA Kit is a solid-phase enzyme immunoassay for the qualitative or semi-quantitative detection of IgG antibodies to Salmonella Typhi antigens (such as LPS, Vi polysaccharide, or outer membrane proteins) in human serum or plasma . IgG seropositivity indicates past exposure, convalescence, or chronic carriage of typhoid fever, typically detectable from 1-2 weeks post-infection and persisting for months to years.
Key Features
Format: 96-well microplate coated with purified S. Typhi antigens; includes standards/controls, HRP conjugate, TMB substrate, and photometric reading at 450 nm.
Sample Type: Serum or plasma (EDTA/heparin); 5-10 μL sample volume post-dilution.
Assay Time: 90-120 minutes total, including 30-60 min incubation at RT/37°C.
Interpretation: Antibody index <0.9 negative, 0.9-1.1 equivocal, >1.1 positive; sensitivity 85-95%, specificity >95%.
Availability at Labex
Labex, Pakistan's Laboratory experts and premier laboratory suppliers, stocks this ELISA kit as the best supplier for typhoid diagnostics.
