| IL1RA

The interleukin-1 receptor antagonist (IL-1RA) is a protein that is encoded by the IL1RN gene.IL-1RA was initially called the IL-1 inhibitor and was discovered separately in 1984 by two independent laboratories.IL-1RA is an agent that binds non-productively to the cell surface interleukin-1 receptor (IL-1R), the same receptor that binds interleukin 1 family (IL-1), preventing IL-1's from sending a signal to that cell.
 

| 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)	2000	1000	500	250	125	62.5	31.25	0
OD	2.21	1.82	1.51	1.08	0.79	0.5	0.35	0.09
Corrected OD	2.12	1.73	1.42	0.99	0.7	0.41	0.26	-

 

| Repeatability

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

| Recovery

The recovery of Human IL1RA 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)	80-101	96
Plasma(n=8)	91-105	101
Tissue Homogenates(n=8)	95-108	107

 

| Linearity

Samples were spiked with high concentrations of Human IL1RA and diluted with Universal Diluent to produce samples with values within the range of the assay.

 

		Serum(n=4)	Plasma(n=4)	Tissue Homogenates(n=4)
1 : 2	Range (%)	83-95	88-97	90-110
	Average (%)	91	93	96
1 : 4	Range (%)	89-103	87-109	105-116
	Average (%)	94	98	108