| Ghrelin

Ghrelin is a hormone primarily produced by enteroendocrine cells of the gastrointestinal tract, especially the stomach, and is often called a "hunger hormone".Blood levels of ghrelin are highest before meals when hungry, returning to lower levels after mealtimes.Ghrelin may help prepare for food intake by increasing gastric motility and stimulating the secretion of gastric acid.Ghrelin activates cells in the anterior pituitary gland and hypothalamic arcuate nucleus, including neuropeptide Y neurons that initiate appetite.Ghrelin stimulates brain structures having a specific receptor – the growth hormone secretagogue receptor 1A (GHSR-1A).
 

| Typical data

As the OD values of the standard curve may vary according to the conditions of the actual assay performance (e.g. operator, pipetting technique, wash technique or temperature effects), the operator should establish a standard curve for each test. Typical standard curve and data are provided below for reference only.

 

Concentration (pg/mL)	5000	2500	1250	625	312.5	156.25	78.12	0
OD	0.216	0.297	0.417	0.669	0.955	1.405	1.79	1.865

 

| Repeatability

Intra-assay Precision (Precision within an assay)：CV% < 10%; Inter-assay Precision (Precision between assays)：CV% < 10%
 

| Recovery

The recovery of Mouse Ghrelin spiked at three different levels in samples throughout the range of the assay was evaluated in various matrices.

 

Sample Type	Range(%)	Average Recovery(%)
Serum(n=8)	81-101	96
Plasma(n=8)	92-105	101
Cell Culture Supernates(n=8)	97-108	105

 

| Linearity

Samples were spiked with high concentrations of Mouse Ghrelin and diluted with Universal Diluent to produce samples with values within the range of the assay.

 

		Serum(n=4)	Plasma(n=4)	Cell Culture Supernates(n=4)
1 : 2	Range (%)	83-96	88-96	90-110
	Average (%)	92	93	96
1 : 4	Range (%)	89-104	87-108	105-115
	Average (%)	93	98	110