Mouse Leukocyte Elastase Inhibitor (LEI) ELISA Kit Introduction
Item | Standard | Test Result | |
Description | This immunoassay kit allows for the specific measurement of this index in serum, Plasma , Urine ,tissue homogenates and Cell culture supernates and Other biological fluids.. | Conform | |
Identification | Colorimetric | Positive | |
Composition | Pre-coated, ready to use 96-well strip plate Standard (freeze dried) Standard Diluent Detection Reagent A Detection Reagent B Assay Diluent A Assay Diluent B TMB Substhumane Stop Solution Wash Buffer(30 x concenthumane) Plate sealer for 96 wells Instruction manual | 1 2 1 × 20ml 1× 120μl 1× 120μl 1 × 12ml 1 × 12ml 1 × 9ml 1 ×6ml 1 ×20ml 2 1 | Conform |
Mouse Leukocyte Elastase Inhibitor (LEI) ELISA KitTest principle
The microtiter plate provided in this kit has been pre-coated with an antibody specific to this index. Standards or samples are then added to the appropriate microtiter plate wells with a biotin-conjugated polyclonal antibody preparation specific for this index and Avidin conjugated to Horseradish Peroxidase (HRP) is added to each microplate well and incubated. Then a TMB substrate solution is added to each well. Only those wells that contain the index, biotin-conjugated antibody and enzyme-conjugated Avidin will exhibit a change in color. The enzyme-substrate reaction is terminated by the addition of a sulphuric acid solution and the color change is measured spectrophotometrically at a wavelength of 450 nm ± 2 nm. The concentration of the index in the samples is then determined by comparing the O.D. of the samples to the standard curve
Recovery
Matrices listed below were spiked with certain level of recombinant the index and the recovery humanes were calculated by comparing the measured value to the expected amount of the index in samples.
Matrix | Recovery range (%) | Average(%) |
serum(n=5) | 81-93 | 86 |
EDTA plasma(n=5) | 80-97 | 88 |
heparin plasma(n=5) | 90-101 | 95 |
Mouse Leukocyte Elastase Inhibitor (LEI) ELISA KitLinearity
The linearity of the kit was assayed by testing samples spiked with appropriate concenthumanion of the index and their serial dilutions. The results were demonsthumaned by the percentage of calculated concenthumanion to the expected.
Sample | 1:2 | 1:4 | 1:8 | 1:16 |
serum(n=5) | 82-96% | 83-98% | 81-99% | 93-101% |
EDTA plasma(n=5) | 88-101% | 86-95% | 90-102% | 80-93% |
heparin plasma(n=5) | 80-91% | 82-90% | 95-104% | 79-95% |
Precision
Intra-assay Precision (Precision within an assay): 3 samples with low, middle and high level the index were tested 20 times on one plate, respectively.
Inter-assay Precision (Precision between assays): 3 samples with low, middle and high level the index were tested on 3 different plates, 8 replicates in each plate.
CV(%) = SD/meanX100
Intra-Assay: CV<10%
Inter-Assay: CV<12%
Stability
The stability of kit is determined by the loss rate of activity. The loss rate of this kit is less than 5% within the expiration date under appropriate storage condition.
To minimize extra influence on the performance, operation procedures and lab conditions, especially room temperature, air humidity, incubator temperature should be strictly controlled. It is also strongly suggested that the whole assay is performed by the same operator from the beginning to the end
Assay procedure summary
1. Prepare all reagents, samples and standards;
2. Add 50µL standard or sample to each well.
And then add 50µL prepared Detection Reagent A immediately.
Shake and mix. Incubate 1 hour at 37℃;
3. Aspirate and wash 3 times;
4. Add 100µL prepared Detection Reagent B. Incubate 1 hour at 37℃;
5. Aspirate and wash 5 times;
6. Add 90µL Substrate Solution. Incubate 15-25 minutes at 37℃;
7. Add 50µL Stop Solution. Read at 450 nm immediately.
DL-CTBP2-Hu 人羧基端结合蛋白2(CTBP2) ELISA Kit human C-Terminal Binding Protein 2 (CTBP2) ELISA Kit Homo sapiens human 0.313-20ng/mL 0.125ng/mL 96T 3880 12 months
DL-SEPT12-Hu 人胞裂蛋白12(SEPT12) ELISA Kit human Septin 12 (SEPT12) ELISA Kit Homo sapiens human 0.156-10ng/mL 0.064ng/mL 96T 3880 12 months
DL-MARCKS-Hu 人十四烷基化丙氨酸丰富蛋白激酶C底物(MARCKS) ELISA Kit human Myristoylated Alanine Rich Protein Kinase C Substrate (MARCKS) ELISA Kit Homo sapiens human 0.156-10ng/mL 0.055ng/mL 96T 3880 12 months
DL-GAN-Hu 人巨轴索神经蛋白(GAN) ELISA Kit human Gigaxonin (GAN) ELISA Kit Homo sapiens human 0.156-10ng/mL 0.055ng/mL 96T 3880 12 months
DL-CDKN3-Hu 人周期素依赖性激酶YZ因子3(CDKN3) ELISA Kit human Cyclin Dependent Kinase Inhibitor 3 (CDKN3) ELISA Kit Homo sapiens human 0.156-10ng/mL 0.053ng/mL 96T 3880 12 months