Background: Interleukin-6 (IL-6) is an immunoregulatory cytokine that activates a cell surface signaling assembly composed of IL6, IL6RA, and the shared signaling receptor gp130. It acts as both a pro-inflammatory and anti-inflammatory cytokine. IL-6 is one of the most important mediators of fever and of the acute phase response. It is capable of crossing the blood brain barrier and initiating synthesis of PGE2 in the hypothalamus, thereby changing the body's temperature setpoint. IL-6 is also essential for hybridoma growth and is found in many supplemental cloning media such as briclone. Inhibitors of IL-6 are used to treat postmenopausal osteoporosis. IL-6 is relevant to many diseases such as diabetes, atherosclerosis, depression, Alzheimer's Disease, systemic lupus erythematosus, prostate cancer, and rheumatoid arthritis.

Principle of the Assay: This kit was based on sandwich enzyme-linked immune-sorbent assay technology. Anti-IL-6 polyclonal antibody was pre-coated onto 96-well plates. And the biotin conjugated anti-IL-6 polyclonal antibody was used as detection antibodies. The standards, test samples and biotin conjugated detection antibody were added to the wells subsequently, and wash with wash buffer. Avidin-Biotin-Peroxidase Complex was added and unbound conjugates were washed away with wash buffer. TMB substrates were used to visualize HRP enzymatic reaction. TMB was catalyzed by HRP to produce a blue color product that changed into yellow after adding acidic stop solution. The density of yellow is proportional to the IL-6 amount of sample captured in plate. Read the O.D. absorbance at 450nm in a microplate reader, and then the concentration of IL-6 can be calculated.

Small volumes of IL-6 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.

MBS355306 is a ready-to-use microwell, strip-or-full plate ELISA (enzyme-linked immunosorbent assay) Kit for analyzing the presence of the IL-6, 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 IL-6. The ELISA analytical biochemical technique of the MBS355306 kit is based on IL-6 antibody-IL-6 antigen interactions (immunosorbency) and an HRP colorimetric detection system to detect IL-6 antigen targets in samples. The ELISA Kit is designed to detect native, not recombinant, IL-6. 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(%).