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PEG(Polyethylene Glycol) ELISA Kit
ELK8264
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48 T $265.00
96 T $376.00
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Overview

Product name: PEG(Polyethylene Glycol) ELISA Kit
Reactivity: General
Alternative Names: PEO; POE; Polyethylene oxide; Polyoxyethylene; Carbowax; GoLYTELY; GlycoLax; Fortrans; TriLyte; Colyte; Halflytely; Macrogol; MiraLAX; MoviPrep
Assay Type: Competitive Inhibition
Sensitivity: 4.72 ng/mL
Standard: 1000 ng/mL
Detection Range: 15.63-1000 ng/mL
Sample Type: biological agents
Assay Length: 2h
Research Area: Gastrointestinal science
Test principle: This assay employs the competitive inhibition enzyme immunoassay technique. The microtiter plate provided in this kit has been pre-coated with PEG protein. Standards or samples are added to the appropriate microtiter plate wells then with a biotin-conjugated antibody specific to PEG. Next, Avidin conjugated to Horseradish Peroxidase (HRP) is added to each microplate well and incubated. After TMB substrate solution is added. 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 PEG in the samples is then determined by comparing the OD of the samples to the standard curve.

Standard curve

Concentration (ng/mL) OD Corrected OD
1000.00 0.197
500.00 0.356
250.00 0.575
125.00 0.856
62.50 1.152
31.25 1.592
15.63 1.799
0.00 2.132

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 PEG and the recovery rates were calculated by comparing the measured value to the expected amount of PEG in samples.
Matrix Recovery range Average
serum(n=5) 84-98% 91%
EDTA plasma(n=5) 89-103% 96%
Heparin plasma(n=5) 82-95% 98%

Linearity

The linearity of the kit was assayed by testing samples spiked with appropriate concentration of PEG 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) 87-96% 86-98% 92-103% 87-93%
EDTA plasma(n=5) 82-94% 85-97% 91-102% 81-90%
Heparin plasma(n=5) 89-103% 95-103% 97-105% 88-97%