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高敏型人腫瘤壞死因子β(TNFb)酶聯(lián)免疫吸附檢測試劑盒

一鍵復制產(chǎn)品信息

ELK2314HS

規(guī)格：	價格：
48T	￥1680.00
96T	￥2400.00
96T*5	￥10200.00

下載說明 ①

Overview

Product name:	High Sensitivity Human TNFb(Tumor Necrosis Factor Beta) ELISA Kit
Reactivity:	Human
Alternative Names:	LT; LTA; TNF-B; TNFSF1; Tumor Necrosis Factor Ligand Superfamily Member 1; Lymphotoxin Alpha
Assay Type:	Sandwich
Sensitivity:	0.85 pg/mL
Standard:	100 pg/mL
Detection Range:	1.57-100 pg/mL
Sample Type:	Serum, plasma
Assay Length:	3.5h
Research Area:	Cytokine;Tumor immunity;Infection immunity;
Uniprot ID:	P01374
Test principle:	The test principle applied in this kit is Sandwich enzyme immunoassay. The microtiter plate provided in this kit has been pre-coated with an antibody specific to Human TNFb. Standards or samples are added to the appropriate microtiter plate wells then with a biotin-conjugated antibody specific to Human TNFb. Next, Avidin conjugated to Horseradish Peroxidase (HRP) is added to each microplate well and incubated. After TMB substrate solution is added, only those wells that contain Human TNFb, biotin-conjugated antibody and enzyme-conjugated Avidin will exhibit a change in color. The enzyme-substrate reaction is terminated by the addition of sulphuric acid solution and the color change is measured spectrophotometrically at a wavelength of 450nm ± 10nm. The concentration of Human TNFb in the samples is then determined by comparing the OD of the samples to the standard curve.

標準曲線

Concentration (pg/mL)	OD	Corrected OD
100.00	2.332	2.252
50.00	1.597	1.517
25.00	1.276	1.196
12.50	0.833	0.753
6.25	0.532	0.452
3.13	0.355	0.275
1.57	0.208	0.128
0.00	0.080	0.000

精密度

Intra-assay Precision (Precision within an assay)：CV%<8%

Three samples of known concentration were tested twenty times on one plate to assess intra-assay precision.

Inter-assay Precision (Precision between assays)：CV%<10%

Three samples of known concentration were tested in forty separate assays to assess inter-assay precision.

回收率

Matrices listed below were spiked with certain level of recombinant TNFb and the recovery rates were calculated by comparing the measured value to the expected amount of TNFb in samples.

Matrix	Recovery range	Average
serum(n=5)	86-95%	91%
EDTA plasma(n=5)	86-100%	93%
Heparin plasma(n=5)	95-101%	98%

線性

The linearity of the kit was assayed by testing samples spiked with appropriate concentration of TNFb and their serial dilutions. The results were demonstrated by the percentage of calculated concentration to the expected.