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Human GREM1(Gremlin 1) ELISA Kit
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ELK3100
Size： Price：
48 T $320.00
96 T $458.00
96 T*5 $1947.00
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Overview

Product name: Human GREM1(Gremlin 1) ELISA Kit
Reactivity: Human
Alternative Names: PIG2; CKTSF1B1; DAND2; IHG-2; DAND2; DRM; Increased in high glucose protein 2; Cell proliferation-inducing gene 2 protein; Cysteine knot superfamily 1, BMP antagonist 1
Assay Type: Sandwich
Sensitivity: 55 pg/mL
Standard: 8000 pg/mL
Detection Range: 125-8000 pg/mL
Sample Type: serum, plasma, tissue homogenates, urine and other biological fluids
Assay Length: 3.5h
Research Area: Signal transduction;Tumor immunity;Developmental science;Bone metabolism;
Uniprot ID: O60565
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 GREM1. Standards or samples are added to the appropriate microtiter plate wells then with a biotin-conjugated antibody specific to Human GREM1. 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 GREM1, 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 GREM1 in the samples is then determined by comparing the OD of the samples to the standard curve.

Standard curve

Concentration (pg/mL) OD Corrected OD
8000.00 2.195 2.101
4000.00 1.593 1.499
2000.00 1.226 1.132
1000.00 0.895 0.801
500.00 0.568 0.474
250.00 0.308 0.214
125.00 0.190 0.096
0.00 0.094 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 GREM1 and the recovery rates were calculated by comparing the measured value to the expected amount of GREM1 in samples.
Matrix Recovery range Average
serum(n=5) 90-105% 97%
EDTA plasma(n=5) 87-99% 93%
Heparin plasma(n=5) 82-95% 88%

Linearity

The linearity of the kit was assayed by testing samples spiked with appropriate concentration of GREM1 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) 85-90% 83-96% 95-102% 88-95%
EDTA plasma(n=5) 86-93% 91-101% 87-98% 95-104%
Heparin plasma(n=5) 82-94% 85-96% 78-90% 91-99%