IgE (human) LANCE Ultra TR-FRET Detection Kit, 10,000 Assay Points

The LANCE® Ultra Human IgE Detection Kit is designed for detection and quantitation of human IgE in buffered solution and cell culture media using a homogeneous TR-FRET (no-wash steps, no separation steps) assay.

• No-wash steps, no separation steps
• TR-FRET technology
• Sensitive detection
• High reproducibility
• Faster time-to-results
• Easy automation
• 96-well, 384-well, and 1536-well formats

LANCE® and LANCE® (Lanthanide chelate excite) Ultra are our TR-FRET (time-resolved fluorescence resonance energy transfer), homogeneous (no wash) technologies. One antibody of interest is labeled with a donor fluorophore (a LANCE Europium chelate) and the second molecule is labeled with an acceptor fluorophore (ULight™ dye). Upon excitation at 320 or 340 nm, energy can be transferred from the donor Europium chelate to the acceptor fluorophore if sufficiently close for FRET (~10 nm). This results in the emission of light at 665 nm.

Immunoglobulin E (IgE) is a monomeric antibody with four Ig-like domains. Compared to all other immunoglobulin classes, IgE is typically the least abundant isotype in plasma of normal healthy individuals. IgE binds with extremely high affinity to Fc-epsilon receptor I (FcɛRI), which is expressed on mast cells, basophils, Langerhans cells, and eosinophils. Circulating IgE upregulates FcɛRI expression on these cells. The combination of strong binding and upregulation of FcɛRI expression contributes to the remarkable potency of this immunoglobulin. IgE is associated with hypersensitivity and allergic reactions, as well as the response to parasitic worm infections.