Human FGF-21 ELISA Kit

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July 19, 2016
July 19, 2016
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Human FGF-21 ELISA Kit
Human FGF-21 ELISA Kit Standard Curve

Human FGF-21 ELISA Kit

Catalog No : 3010195


Human FGF-21 ELISA Kit Features

Product Name            Human FGF-21 ELISA Kit
Assay Type                   Solid Phase Sandwich ELISA
Format                           96-well strip plate
Assay Length              4.5 hours
Sample Volume         Serum ,Plasma, cell culture media , 100ul
Detection Method    Colorimetric
Sensitivity                   4 pg/mL
Assay Range                8.2-2000 pg/mL
Reactivity                     Human
Cross-Reactivity       No cross-reactivity observed with available related molecules
Gene Names               FGF21
Gene ID                        26291
Swissprot ID              Q9NSA1


Sample Type    Average % RecoveryRange %
Serum  113101-125
Plasma 9889-117
Cell culture media 10298-119


Sample TypeDilution% of Expected
Cell culture media1:2104

Standard Curve: Human FGF-21 ELISA Kit

Human FGF-21 ELISA Kit Standard Curve

Kit Components

• Pre-Coated 96-well Strip Microplate
• Wash Buffer
• Stop Solution
• Assay Diluent
• Standards
• Biotinylated Detection Antibody
• Streptavidin-Conjugated HRP
• TMB One-Step Substrate

Protocol Outline

1. Prepare all reagents, samples and standards as instructed in the manual.
2. Add 100 µl of standard or sample to each well.
3. Incubate 2.5 h at RT or O/N at 4°C.
4. Wash and add 100 µl of prepared biotin antibody to each well.
5. Incubate 1 h at RT.
6. Wash and add 100 µl of prepared Streptavidin solution to each well.
7. Incubate 45 min at RT.
8. Wash and add 100 µl of TMB One-Step Substrate Reagent to each well.
9. Incubate 30 min at RT.
10. Add 50 µl of Stop Solution to each well.
11. Read at 450 nm/570 nm.


FGF-21 (Fibroblast Growth Factor 21) is a member of an FGF subfamily that also includes FGF-19 and FGF-23. FGF21 stimulates glucose uptake in adipocytes but not in other cell types.[8] This effect is additive to the activity of insulin. FGF21 treatment of adipocytes is associated with phosphorylation of FRS2, a protein linking FGF receptors to the Ras/MAP kinase pathway. Its injection in ob/ob mice results in an increase in Glut1 in adipose tissue. FGF21 also protects animals from diet-induced obesity when overexpressed in transgenic mice and lowers blood glucose and triglyceride levels when administered to diabetic rodents.[8] Treatment of animals with FGF21 results in increased energy expenditure, fat utilization and lipid excretion.

Plasma FGF21 was similarly increased in the absence of parturition when an energy-deficit state was induced by feed restricting late-lactating dairy cows, implicating energy insufficiency as a cause of chronically elevated FGF21 in EL. The liver was the major source of plasma FGF21 in early lactation with little or no contribution by WAT, skeletal muscle, and mammary gland. Meaningful expression of the FGF21 coreceptor β-Klotho was restricted to liver and WAT in a survey of 15 tissues that included the mammary gland. Expression of β-Klotho and its subset of interacting FGF receptors was modestly affected by the transition from LP to EL in liver but not in WAT.

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The entire kit may be stored at -20°C for up to 1 year from the date of shipment. Avoid repeated freeze-thaw cycles. The kit may be stored at 4°C for up to 6 months. For extended storage, it is recommended to store at -80°C.

Regulatory Status 

Human FGF-21 ELISA Kit is for Research Use Only.


1 Plate Kit, 2 Plate Kit, 5 Plate Kit

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