ELISA Kit for Laminin Gamma 2 (LAMC2)

B2T; EBR2; EBR2A; LAMB2T; LAMNB2; Kalinin/nicein/epiligrin 100 kDa subunit; Cell-scattering factor 140 kDa subunit; Ladsin 140 kDa; Large adhesive scatter factor 140 kDa

Specificity

This assay has high sensitivity and excellent specificity for detection of Laminin Gamma 2 (LAMC2).
No significant cross-reactivity or interference between Laminin Gamma 2 (LAMC2) and analogues was observed.

Recovery

Matrices listed below were spiked with certain level of recombinant Laminin Gamma 2 (LAMC2) and the recovery rates were calculated by comparing the measured value to the expected amount of Laminin Gamma 2 (LAMC2) in samples.

Matrix Recovery range (%) Average(%)
serum(n=5) 78-98 85
EDTA plasma(n=5) 80-89 83
heparin plasma(n=5) 96-104 101

Precision

Intra-assay Precision (Precision within an assay): 3 samples with low, middle and high level Laminin Gamma 2 (LAMC2) were tested 20 times on one plate, respectively.
Inter-assay Precision (Precision between assays): 3 samples with low, middle and high level Laminin Gamma 2 (LAMC2) were tested on 3 different plates, 8 replicates in each plate.
CV(%) = SD/meanX100
Intra-Assay: CV<10%
Inter-Assay: CV<12%

Linearity

The linearity of the kit was assayed by testing samples spiked with appropriate concentration of Laminin Gamma 2 (LAMC2) and their serial dilutions. The results were demonstrated by the percentage of calculated concentration to the expected.

Sample 1:2 1:4 1:8 1:16
serum(n=5) 82-102% 81-104% 94-103% 90-98%
EDTA plasma(n=5) 92-99% 81-88% 79-99% 91-101%
heparin plasma(n=5) 95-104% 93-101% 80-89% 98-105%

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.

Reagents and materials provided

Reagents Quantity Reagents Quantity
Pre-coated, ready to use 96-well strip plate 1 Plate sealer for 96 wells 4
Standard 2 Standard Diluent 1×20mL
Detection Reagent A 1×120µL Assay Diluent A 1×12mL
Detection Reagent B 1×120µL Assay Diluent B 1×12mL
TMB Substrate 1×9mL Stop Solution 1×6mL
Wash Buffer (30 × concentrate) 1×20mL Instruction manual 1

Assay procedure summary

1. Prepare all reagents, samples and standards;
2. Add 100µL standard or sample to each well. Incubate 1 hours at 37°C;
3. Aspirate and add 100µL prepared Detection Reagent A. Incubate 1 hour at 37°C;
4. Aspirate and wash 3 times;
5. Add 100µL prepared Detection Reagent B. Incubate 30 minutes at 37°C;
6. Aspirate and wash 5 times;
7. Add 90µL Substrate Solution. Incubate 10-20 minutes at 37°C;
8. Add 50µL Stop Solution. Read at 450nm immediately.

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Magazine Citations
Molecular & Cellular Proteomics LAMC2: A promising new pancreatic cancer biomarker identified by proteomic analysis of pancreatic adenocarcinoma tissues Mcponline: 023507
Clinical Cancer Research Validation of Biomarkers That Complement CA19.9 in Detecting Early Pancreatic Cancer Pubmed:25239611
British journal of cancer Serum LAMC2 enhances the prognostic value of a multi-parametric panel in non-small cell lung cancer PubMed: 26180921
U.S. National Library of Medicine Prognostic significance of circulating laminin gamma2 for early-stage non-small-cell lung cancer pubmed:27462170
American Journal of Obstetrics & Gynecology MFM PRETERM BIRTH PREDICTION IN ASYMPTOMATIC WOMEN AT MID-GESTATION USING A PANEL OF NOVEL PROTEIN BIOMARKERS: The Prediction of PreTerm …
Biomarkers of Preterm Birth
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