膜杰作
Star Staining
| ID | Components | Size |
| RAS087-C01 | Pre-coated Human ACE2 Microplate | 1 plate |
| RAS087-C02 | SARS-CoV-2 Antibody Positive Control | 100 μL |
| RAS087-C03 | SARS-CoV-2 Antibody Negative Control | 100 μL |
| RAS087-C04 | HRP-SARS-CoV-2 Spike RBD(BA.2) | 15 μg |
| RAS087-C05 | 10xWashing Buffer | 50 mL |
| RAS087-C06 | Dilution Buffer | 50 mL |
| RAS087-C07 | Substrate Solution | 12 mL |
| RAS087-C08 | Stop Solution | 7 mL |
背景（Background）
A more contagious subvariant of omicron, known as BA.2, is spreading across the globe and could soon become the dominant version of Covid-19.It's now the top variant in at least 18 countries and rapidly spreading, representing 35% of all new cases that have been genetically sequenced worldwide, up from 10 countries and 21% of cases the week before, according to new data from the World Health Organization. In the U.S, BA.2 currently makes up 3.8% of genetically sequenced Covid cases, according to the Centers for Disease Control and Prevention.To facilitate the mutant-related research, drug trials and vaccine development, a high-throughput assay to measure neutralizing antibodies against the mutants is in urgent need.
应用说明（Application）
The kit is developed for qualitative detection or titer measurement of Anti-SARS-CoV-2 (BA.2) neutralizing antibody (Spike RBD) in human serum.
It is for research use only.
重构方法（Reconstitution）
Please see Certificate of Analysis for details of reconstitution instruction and specific concentration.
存储 & 运输（Storage & Shipping）
1. Unopened kit should be stored at 2℃-8℃ upon receiving.
2. Find the expiration date on the outside packaging and do not use reagents past their expiration date.
3. The opened kit should be stored per components table. The shelf life is 30 days from the date of opening.
原理（Assay Principles）
This assay kit is used to measure the levels of Anti-SARS-CoV-2 neutralizing antibody through a competitive ELISA. The microplate in the kit has been pre-coated with Human ACE2 protein. First serum samples, Positive control，Negative Control are added to the wells followed by addition of HRP-SARS-CoV-2 Spike RBD. After incubation, the wells are washed and substrate is added to the wells. The reaction is terminated by the addition of stop solution and the intensity of color is measured at 450 nm. The presence of neutralizing antibodies in samples will compete with ACE2 for HRP-SARS-CoV-2 Spike RBD binding. The intensity of assay signal decrease proportionally to the presence of Anti-SARS-CoV-2 neutralizing antibody.
Your experiment will include 5 simple steps:
a) All reagents were returned to room temperature(20°C-25°C) before use.
b) Make series the tested sample and control with ditlution buffer,HRP-SARS-CoV-2 RBD diluted with dilution buffer.
c) Add the HRP-SARS-CoV-2 RBD ,diluted sample and Control add the plate respectively.
d) Wash the plate and add TMB or other colorimetric HRP substrate.
e) Stop the substrate reaction by add diluted acid. Absorbance (OD) is calculate as the absorbance at 450 nm minus the absorbance at 630 nm to remove background prior to statistical analysis. The OD Value reflects the amount of protein bound.
