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一步法人脂蛋白a(Lpa)酶聯免疫吸附檢測試劑盒
ELK058ES
規格: 價格:
64T ¥2240.00
112T ¥3200.00

Overview

Product name: EasyStep Human Lpa(Lipoprotein a) ELISA Kit
Reactivity: Human
Alternative Names: LP-a; LP; AK38; APOA
Assay Type: Sandwich
Sensitivity: 0.38 ng/mL
Standard: 50 ng/mL
Detection Range: 0.78-50 ng/mL
Sample Type: Serum, plasma
Assay Length: 1.5h
Research Area: Metabolic pathway;Cardiovascular biology;Hepatology;Gastroenterology;Nutrition metabolism;
Uniprot ID: P08519
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 Lpa, and the Human Lpa standard plate wells that pre-coated using protein-related techniques are provided separately. Standard/Sample Diluent Buffer or samples are added to the appropriate microtiter plate wells ,then added a HRP-conjugated antibody specific to Human Lpa. After TMB substrate solution is added, only those wells that contain Human Lpa and HRP-conjugated antibody 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 Lpa in the samples is then determined by comparing the OD of the samples to the standard curve.

標準曲線

Concentration (ng/mL) OD Corrected OD
50.00 2.185 2.096
25.00 1.527 1.438
12.50 1.111 1.022
6.25 0.813 0.724
3.13 0.591 0.502
1.57 0.239 0.150
0.79 0.187 0.098
0.00 0.089 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 Lpa and the recovery rates were calculated by comparing the measured value to the expected amount of Lpa in samples.
Matrix Recovery range Average
serum(n=5) 87-99% 93%
EDTA plasma(n=5) 81-95% 88%
Heparin plasma(n=5) 80-95% 87%

線性

The linearity of the kit was assayed by testing samples spiked with appropriate concentration of Lpa and their serial dilutions. The results were demonstrated by the percentage of calculated concentration to the expected.
Matrix 1:2 1:4 1:8 1:16
serum(n=5) 89-97% 93-102% 81-96% 93-106%
EDTA plasma(n=5) 85-94% 92-101% 87-96% 82-90%
Heparin plasma(n=5) 96-105% 88-96% 87-98% 93-101%

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