Human Interleukin-4 ELISA Kit (A33011)

$715

Shipping Information

$40
Dispatched from St. Louis, MO.
Lead Time: 5-8 business days.
Name
Human Interleukin-4 ELISA Kit
Assay Type
Sandwich (quantitative)
Principle of Assay
This IL-4 enzyme linked immunosorbent assay (ELISA) applies a technique called a quantitative sandwich immunoassay. The microtiter plate provided in this kit has been pre-coated with a polyclonal antibody specific to IL-4. Standards or samples are then added to the appropriate microtiter plate wells with a biotin-conjugated monoclonal antibody preparation specific for IL-4 and incubated. IL-4 if present, will bind and become immobilized by the antibody pre-coated on the wells and then be “sandwiched” by biotin conjugate. The microtiter plate wells are thoroughly washed to remove unbound IL-4 and other components of the sample. In order to quantitatively determine the amount of IL-4 present in the sample, Avidin conjugated to Horseradish Peroxidase (HRP) is added to each microplate well and incubated. Avidin is a tetramer containing four identical subunits that each have a high affinity-binding site for biotin. The wells are thoroughly washed to remove all unbound HRP-conjugated Avidin and a TMB (3,3'5,5' tetramethyl-benzidine) substrate solution is added to each well. The enzyme (HRP) and substrate are allowed to react over a short incubation period. Only those wells that contain IL-4, biotin-conjugated antibody, and enzyme-conjugated Avidin will exhibit a change in colour. The enzymesubstrate reaction is terminated by the addition of a sulphuric acid solution and the colour change is measured spectrophotometrically at a wavelength of 450 nm ± 2 nm.
Platform
Microplate
Detection Type
Colorimetric
Sample Type
Serum, plasma, cell culture supernatant, and other biological fluids.
Sensitivity
< 6.6 pg/ml
Product Range
6.6-1000 pg/ml
Assay Time
4h 30m
Specificity
This sandwich ELISA recognizes both natural and recombinant human IL-4.
Reactivity
Human
Cross Reactivity
This assay has shown no cross-reactivity with other cytokines tested.
Recovery
Storage
Store at 2-8°C.
Synonyms
B-cell stimulatory factor 1, Binetrakin, BSF-1, IL4, Lymphocyte stimulatory factor 1, Pitrakinra
Disclaimer
This product is for research use only. It is not intended for diagnostic or therapeutic use.
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