Lipoteichoic acid ELISA Kit

ELISA Kit

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Lipoteichoic acid

Assay Methodology: Quantitative Competitive ELISA

Aviva Systems Biology Lipoteichoic acid ELISA Kit (OKEH02591) is based on a competitive enzyme immunoassay technique. The microtiter well-plate in this kit has been pre-coated with an anti-Lipoteichoic acid antibody. Sample or standards are added to the wells along with a fixed quantity of biotinylated Lipoteichoic acid and incubated. The Lipoteichoic acid found in the sample or standards competes with the biotinylated Lipoteichoic acid for limited binding sites on the immobilized anti-Lipoteichoic acid antibody. Excess unbound biotinylated Lipoteichoic acid and sample or standard Lipoteichoic acid is washed from the plate. Avidin-HRP conjugate is added, incubated and washed. An enzymatic reaction is then produced through the addition of TMB substrate which is catalyzed by the immobilized HRP to generate a blue color product that changes yellow after adding acidic stop solution. The density of yellow coloration is measured by reading the absorbance at 450 nm which is quantitatively proportional to the amount of biotinylated Lipoteichoic acid captured in the well and inversely proportional to the amount of Lipoteichoic acid which was contained in the sample or standard.

Mean Intra-assay CV%: < 7.9% (n = 20)
Mean Inter-assay CV%: < 9.1% (n = 20)