Tri-Iodothyronine (T3) ELISA Kit for Sheep

Under normal physiological conditions, T3 represents approximately 5 percent of the thyroid hormones in serum. Although present in lower concentration, T3 has a greater intrinsic metabolic activity, faster turnover and larger volume of distribution than circulating T4. Reports that thyrotoxicosis may be caused by abnormally high concentrations of T3 rather than T4 have reinforced the importance of T3 measurements. In addition, T3 determination is an important tool for monitoring hypothyroid patients receiving sodium liothyronine therapy. Unlike “T3 Uptake” tests, which estimate the saturation of thyroid hormone binding proteins, total T3 analysis measures circulating levels of triiodothyronine. Most reports indicate that T3 levels distinguish clearly between euthyroid and hyperthyroid subjects, but provide a less clear-cut separation between hypothyroid and euthyroid subjects. Numerous conditions unrelated to thyroid disease may cause abnormal T3 values.

Principle of the Assay: This assay employs a two-site sandwich ELISA to quantitate T3 in samples. An antibody specific for T3 has been pre-coated onto a microplate. Standards and samples are pipetted into the wells and anyT3 present is bound by the immobilized antibody. After removing any unbound substances, a biotin-conjugated antibody specific for T3 is added to the wells. After washing, Streptavidin conjugated Horseradish Peroxidase (HRP) is added to the wells. Following a wash to remove any unbound avidin-enzyme reagent, a substrate solution is added to the wells and color develops in proportion to the amount of T3 bound in the initial step. The color development is stopped and the intensity of the color is measured.

Small volumes of T3 elisa kit vial(s) may occasionally become entrapped in the seal of the product vial during shipment and storage. If necessary, briefly centrifuge the vial on a tabletop centrifuge to dislodge any liquid in the container`s cap. Certain products may require to ship with dry ice and additional dry ice fee may apply.

MBS283175 is a ready-to-use microwell, strip-or-full plate ELISA (enzyme-linked immunosorbent assay) Kit for analyzing the presence of the Tri-iodothyronine (T3) ELISA Kit target analytes in biological samples. The concentration gradients of the kit standards or positive controls render a theoretical kit detection range in biological research samples containing T3. The ELISA analytical biochemical technique of the MBS283175 kit is based on T3 antibody-T3 antigen interactions (immunosorbency) and an HRP colorimetric detection system to detect T3 antigen targets in samples. The ELISA Kit is designed to detect native, not recombinant, T3. Appropriate sample types may include undiluted body fluids and/or tissue homogenates, secretions. Quality control assays assessing reproducibility identified the intra-assay CV (%) and inter-assay CV(%).