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人細(xì)胞角蛋白19片段抗原21-1(CYFRA21-1)酶聯(lián)免疫吸附檢測試劑盒

ELK1967

規(guī)格：	價格：
48T	￥1960.00
96T	￥2800.00

下載說明 ①

Overview

Product name:	Human CYFRA21-1(Cytokeratin Fragment Antigen 21-1) ELISA Kit
Reactivity:	Human
Alternative Names:	CYFRA21-1
Assay Type:	Sandwich
Sensitivity:	0.117 ng/mL
Standard:	20 ng/mL
Detection Range:	0.32-20 ng/mL
Sample Type:	serum, plasma, tissue homogenates, cell lysates, cell culture supernates and other biological fluids
Assay Length:	3.5h
Research Area:	Tumor immunity;Dermatology;
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 CYFRA21-1. Standards or samples are added to the appropriate microtiter plate wells then with a biotin-conjugated antibody specific to Human CYFRA21-1. 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 CYFRA21-1, 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 CYFRA21-1 in the samples is then determined by comparing the OD of the samples to the standard curve.

標(biāo)準(zhǔn)曲線

Concentration (ng/mL)	OD	Corrected OD
20.00	2.045	1.951
10.00	1.502	1.408
5.00	1.034	0.940
2.50	0.875	0.781
1.25	0.539	0.445
0.63	0.397	0.303
0.32	0.206	0.112
0.00	0.094	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 CYFRA21-1 and the recovery rates were calculated by comparing the measured value to the expected amount of CYFRA21-1 in samples.

Matrix	Recovery range	Average
serum(n=5)	78-90%	84%
EDTA plasma(n=5)	84-97%	90%
Heparin plasma(n=5)	87-95%	91%

線性

The linearity of the kit was assayed by testing samples spiked with appropriate concentration of CYFRA21-1 and their serial dilutions. The results were demonstrated by the percentage of calculated concentration to the expected.