{"product_id":"ft4-free-thyroxine-elisa-kit-e-el-0122","title":"fT4 (Free Thyroxine) ELISA Kit - E-EL-0122","description":"\u003cp\u003efT4 (Free Thyroxine) ELISA Kit\u003c\/p\u003e\n\n\u003cp\u003eSizes: 24T, 48T, 96T\u003c\/p\u003e\n\n\u003cp\u003eCatalogue Numbers: E-EL-0122-24T, E-EL-0122-48T, E-EL-0122-96T\u003c\/p\u003e\n\n\u003cp\u003eCitations, Manuals and MSDS Available upon request.\u003c\/p\u003e\n\n\u003cp\u003eAbbreviation: fT4\u003c\/p\u003e\n\n \n\n \n\n\u003cp\u003eResearch Areas: Signaling transduction,Developmental Biology\u003c\/p\u003e\n\n\u003cp\u003eTarget Species: Universal\u003c\/p\u003e\n\n\u003cp\u003eApplication: ELISA\u003c\/p\u003e\n\n\u003cp\u003eUsage: This ELISA kit applies to the in vitro quantitative determination of fT4 concentrations in serum, plasma and other biological fluids.\u003c\/p\u003e\n\n\u003cp\u003eTested Sample Types: Serum, Plasma and other biological fluids\u003c\/p\u003e\n\n\u003cp\u003eType: Competitive\u003c\/p\u003e\n\n\u003cp\u003eAssay Time: 2.5h\u003c\/p\u003e\n\n\u003cp\u003eDetection Type: Colormetric\u003c\/p\u003e\n\n\u003cp\u003eSensitivity: 0.94 pg\/mL\u003c\/p\u003e\n\n\u003cp\u003eDetection Range: 1.56-100 pg\/mL\u003c\/p\u003e\n\n\u003cp\u003eTest Principle: This ELISA kit uses the Competitive-ELISA principle. The micro ELISA plate provided in this kit has been pre-coated with Universal fT4. During the reaction, Universal fT4 in the sample or standard competes with a fixed amount of Universal fT4 on the solid phase supporter for sites on the Biotinylated Detection Ab specific to Universal fT4. Excess conjugate and unbound sample or standard are washed away, and Avidin-Horseradish Peroxidase (HRP) conjugate are added to each micro plate well and incubated. Then a TMB substrate solution is added to each well. The enzyme-substrate reaction is terminated by the addition of stop solution and the color turns from blue to yellow. The optical density (OD) is measured spectrophotometrically at a wavelength of 450 nm ± 2 nm. The concentration of Universal fT4 in tested samples can be calculated by comparing the OD of the samples to the standard curve.\u003c\/p\u003e\n\n\u003cp\u003eCross Reactivity: This kit recognizes Universal fT4 in samples. No significant cross-reactivity or interference between Universal fT4 and analogues was observed\u003c\/p\u003e\n\n\u003cp\u003eRecovery Rate: 80%-120%\u003c\/p\u003e\n\n\u003cp\u003ePrecision: Both intra-CV and inter-CV are \u0026lt; 10%.\u003c\/p\u003e\n\n\u003cp\u003eStorage: 2-8℃\/-20℃, 12 months\u003c\/p\u003e\n\n\u003cp\u003eShipping: ice bag\u003c\/p\u003e","brand":"Elabscience","offers":[{"title":"24T","offer_id":43006599397555,"sku":"E-EL-0122-24T","price":210.0,"currency_code":"CAD","in_stock":true},{"title":"48T","offer_id":43006599430323,"sku":"E-EL-0122-48T","price":554.4,"currency_code":"CAD","in_stock":true},{"title":"96T","offer_id":43006599463091,"sku":"E-EL-0122-96T","price":693.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0305\/9482\/6376\/products\/Untitled-1_80452fa2-6eb0-46d1-a3f0-b694b97230a0.jpg?v=1706531365","url":"https:\/\/afsbio.com\/products\/ft4-free-thyroxine-elisa-kit-e-el-0122","provider":"AFSBio Inc.","version":"1.0","type":"link"}