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Rat TTR(Transthyretin) ELISA Kit
ELK10618
Size： Price：
48 T $320.00
96 T $458.00
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Overview

Product name: Rat TTR(Transthyretin) ELISA Kit
Reactivity: Rat
Alternative Names: TBPA; PA; PLB; ATTR; PALB; Prealbumin; Prealbumin Amyloidosis Type I; Transports Thyroxine and Retinol
Assay Type: Sandwich
Sensitivity: 2.1 µg/mL
Standard: 500 µg/mL
Detection Range: 7.82-500 µg/mL
Sample Type: Serum, plasma, tissue homogenates, cell lysates, cell culture supernates and other biological fluids.
Assay Length: 3.5h
Research Area: Enzyme & Kinase;Tumor immunity;Infection immunity;Hormone metabolism;
Uniprot ID: P02767
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 Rat TTR. Standards or samples are added to the appropriate microtiter plate wells then with a biotin-conjugated antibody specific to Rat TTR. 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 Rat TTR, 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 Rat TTR in the samples is then determined by comparing the OD of the samples to the standard curve.

Standard curve

Concentration (µg/mL) OD Corrected OD
500.00 2.054 1.971
250.00 1.636 1.553
125.00 1.102 1.019
62.50 0.752 0.669
31.25 0.527 0.444
15.63 0.332 0.249
7.82 0.165 0.082
0.00 0.083 0.000

Precision

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.

Recovery

Matrices listed below were spiked with certain level of recombinant TTR and the recovery rates were calculated by comparing the measured value to the expected amount of TTR in samples.
Matrix Recovery range Average
serum(n=5) 88-102% 95%
EDTA plasma(n=5) 80-92% 86%
Heparin plasma(n=5) 90-105% 97%

Linearity

The linearity of the kit was assayed by testing samples spiked with appropriate concentration of TTR 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) 89-99% 83-99% 98-105% 96-101%
EDTA plasma(n=5) 85-100% 84-99% 85-97% 88-102%
Heparin plasma(n=5) 85-99% 98-106% 86-99% 78-95%