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AlphaLISA Human Leptin Detection Kit, 500 Assay Points

The AlphaLISA™ Human Leptin Detection Kit is designed for detection and quantitation of human leptin in serum, buffered solution or cell culture medium in a homogeneous (no-wash steps, no separation steps) assay. Due to the presence of leptin binding proteins in serum or other matrices, an acid-dissociation step might be required before performing the AlphaLISA assay.

Feature Specification
Application Protein Quantification
Dynamic Range 49.8 - 100,000 pg/mL
Limit of Detection 49.8 pg/mL  
Sample Volume 5 µL

The AlphaLISA™ Human Leptin Detection Kit is designed for detection and quantitation of human leptin in serum, buffered solution or cell culture medium in a homogeneous (no-wash steps, no separation steps) assay. Due to the presence of leptin binding proteins in serum or other matrices, an acid-dissociation step might be required before performing the AlphaLISA assay.

Product variants
Unit Size: 500 assay points
Part #:
AL225C
List price
USD 2,463.76
Your online price:
Unit Size: 5,000 assay points
Part #:
AL225F
List price
USD 16,428.50
Your online price:
For research use only. Not for use in diagnostic procedures. All products to be used in accordance with applicable laws and regulations including without limitation, consumption, and disposal requirements under European REACH regulations (EC 1907/2006).

Overview

Formats:

  • Our 500 assay point kit allows you to run 500 wells in 96-well or 384-well format, using a 50 µL reaction volume (5 µL of sample).
  • Our 5,000 assay point kit allows you to run 5,000 wells in 96-well or 384-well format, using a 50 µL reaction volume (5 µL of sample).

Features:

  • No-wash steps, no separation steps
  • ELISA alternative technology
  • Sensitive detection
  • Broad sample compatibility
  • Small sample volume
  • Results in less than 3 hours
  • Half the time of an ELISA assay

Leptin is a 16-kDa hormone secreted by differentiated adipocytes. It regulates energy homeostasis as a result of its action on the brain via hypothalamic neuronal pathways expressing the leptin receptor (LR). Hereditary deficiency of leptin, or functional LRs, causes severe obesity in humans and mice. Leptin-mediated signaling has been implicated in the regulation of food intake, energy expenditure, lipid and carbohydrate metabolism, and reproductive, neuroendocrine, thyroid, and immune function.

AlphaLISA technology allows the detection of molecules of interest in a no-wash, highly sensitive, quantitative assay. In an AlphaLISA assay, a biotinylated anti-analyte antibody binds to the Streptavidin-coated Donor beads while another anti-analyte antibody is conjugated to AlphaLISA Acceptor beads. In the presence of the analyte, the beads come into close proximity. The excitation of the Donor beads causes the release of singlet oxygen molecules that triggers a cascade of energy transfer in the Acceptor beads, resulting in a sharp peak of light emission at 615 nm.

How it works

Principle of the AlphaLISA assay

The AlphaLISA assay is based on an AlphaLISA sandwich immunoassay involving a biotinylated anti-analyte antibody bound to Streptavidin-coated AlphaLISA Donor beads and an anti-analyte antibody conjugated to AlphaLISA Acceptor beads. Both antibodies are directed against the analyte of interest. In the presence of the target, both antibodies bind to analyte and the beads come into proximity. The excitation of the Donor beads provokes the release of singlet oxygen molecules that triggers a cascade of energy transfer within the Acceptor beads, resulting in emission with λmax at 615 nm. The intensity of the signal is directly proportional to the concentration of analyte present in the sample.

Assay Principle AlphaLISA

 

Protocol of the AlphaLISA assay

The AlphaLISA assay can be run in a 96- or 384-well detection plate (50 µL final). As described here, samples or standards are dispensed directly into the assay plate for the detection of the analyte of interest by AlphaLISA reagents. No washing steps are needed. The protocol can be further miniaturized or upscaled by simply resizing each addition volume proportionally.

Protocol of the AlphaLISA human CCL17 assay

Specifications

Application
Protein Quantification
Automation Compatible
Yes
Brand
AlphaLISA
Detection Modality
Alpha
Dynamic Range
49.8 - 100,000 pg/mL
Limit of Detection
49.8 pg/mL  
Product Group
Kit
Sample Volume
5 µL
Shipping Conditions
Shipped in Blue Ice
Target
Leptin
Target Class
Biomarkers
Target Species
Human
Technology
Alpha
Therapeutic Area
Metabolic
Unit Size
500 assay points

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