| NKB

Neuropeptide B is a short biologically active peptide whose precursor in humans is encoded by the NBP gene. Neuropeptide B acts via two G protein-coupled receptors, neuropeptide B/W receptors, called NPBW1 and NPBW2 encoded by the genes NPBWR1 and NPBWR2, respectively. Neuropeptide B is thought to be associated with the regulation of feeding, neuroendocrine system, memory, learning and in the afferent pain pathway.It is expressed throughout the central nervous system with high levels in the substantia nigra, hypothalamus, hippocampus, and spinal cord.
 

| 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)	800	400	200	100	50	25	12.5	0
OD	0.19	0.24	0.31	0.55	0.97	1.38	1.96	2.52

 

| Repeatability

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

| Recovery

The recovery of Human NKB 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)	84-101	96
Plasma(n=8)	92-105	102

 

| Linearity

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

 

		Serum(n=4)	Plasma(n=4)
1 : 2	Range (%)	84-95	88-96
	Average (%)	90	93
1 : 4	Range (%)	89-100	87-108
	Average (%)	94	98