Invitrogen™ Human Leptin ELISA Kit

Description

ELISA

The Human Leptin ELISA quantitates Hu Leptin in human serum, plasma, buffered solution, or cell culture medium. The assay will exclusively recognize both natural and recombinant Hu Leptin. Principle of the method The Human Leptin solid-phase sandwich ELISA (enzyme-linked immunosorbent assay) is designed to measure the amount of the target bound between a matched antibody pair. A target-specific antibody has been pre-coated in the wells of the supplied microplate. Samples, standards, or controls are then added into these wells and bind to the immobilized (capture) antibody. The sandwich is formed by the addition of the second (detector) antibody, a substrate solution is added that reacts with the enzyme-antibody-target complex to produce measurable signal. The intensity of this signal is directly proportional to the concentration of target present in the original specimen. Rigorous validation Each manufactured lot of this ELISA kit is quality tested for criteria such as sensitivity, specificity, precision, and lot-to-lot consistency. See manual for more information on validation.

Leptin is a 167 amino acid long protein hormone with important effects in regulating body weight, metabolism and reproductive function. Leptin is approximately 16 kDa in mass and encoded by the obese (ob) gene. Leptin is expressed predominantly by adipocytes, which fits with the idea that body weight is sensed as the total mass of fat in the body. Smaller amounts of leptin are also secreted by cells in the epithelium of the stomach and in the placenta. Leptin receptors are highly expressed in areas of the hypothalamus known to be important in regulating body weight, as well as in T lymphocytes and vascular endothelial cells. Leptin's effects on body weight are mediated through effects on hypothalamic centers that control feeding behavior and hunger, body temperature and energy expenditure. Leptin is involved in regulating food intake, energy expenditure, and adiposity through hypothalamic leptin receptors. Leptin promotes hematopoiesis, angiogenesis, wound healing, inflammation, immune responses, influences pubertal development and fetal growth. Studies have investigated the role of leptin in obesity, anorexia nervosa, insulin resistance, and hypertension. Leptin also has thermogenic actions and regulates enzymes of fatty acid oxidation. Severe hereditary obesity in rodents and humans can be caused by defects in leptin production.

Specifications

• Accession Number: P41159
• Assay Range: 15.6 to 1000 pg/mL
• Assay Sensitivity: <3.5 pg/mL
• Conjugate: HRP
• Product Type: ELISA
• Sample Type: Plasma, Serum, Supernatant
• Target Species: Human
• For Use With (Application): Colorimetric Detection
• For Use With (Equipment): Colorimetric Microplate Reader
• Gene ID (Entrez): 3952
• Gene Symbol: LEPD,OB,OBS
• Incubation Time: 3 hr.
• Interassay CV: 4.6%
• Intraassay CV: 3.6
• Kit Contents: Pre-coated 96 well plate, Standard, Standard Dilution Buffer, Biotinylated Detection Antibody, Streptavidin-HRP, HRP Diluent, Wash Buffer, Chromogen, Stop Solution, Adhesive Plate Covers
• Label or Dye: HRP
• Marker Gene: Leptin
• Quantity: 96 Tests
• Regulatory Status: RUO
• Sample Volume: Plasma 10 μL, Serum 10 μL, Supernatant 100 μL
• Storage Requirements: 2°C to 8°C
• Target: Leptin
• Test Time: 1 hrs 20 mins
• Total Assay Time: 3 hrs