Cat. # | Size | Price | Inventory |
---|---|---|---|
58873C | 1 Kit (96 assays) |
When ordering five or more kits, please contact us for processing time and pricing.
Looking for this ELISA kit in a 384-well format? Inquire for availability, processing time, and pricing.
REACTIVITY | H |
Product Includes | Volume | Solution Color | |||
---|---|---|---|---|---|
Spike Protein Coated Microwells II | 96 tests | ||||
Anti-Human IgA, HRP-linked Antibody (ELISA Formulated) | 1 ea | Red (Lyophilized) | |||
Sample Diluent A 71637 | 25 ml | ||||
HRP Diluent | 11 ml | Red | |||
ELISA Wash Buffer (20X) 9801 | 25 ml | ||||
TMB Substrate 7004 | 11 ml | ||||
STOP Solution 7002 | 11 ml | ||||
Sealing Tape | 2 ea | ||||
ELISA Kit #58873 Positive Control | 1 ea | ||||
ELISA Kit #58873 Negative Control | 1 ea |
Product Information
NOTE: Prepare solutions with deionized/purified water or equivalent. Prepare only as much reagent as needed on the day of the experiment.
NOTE: Equilibrate all materials and prepared reagents to room temperature prior to running the assay.
Human-sourced samples should be handled in accordance with accepted safety practices. Samples should be diluted at least 1:200 with Sample Diluent A and can be further serially diluted if relative quantification is needed by the user. Positive and Negative Controls do NOT need to be diluted after reconstitution. Refer to the datasheet which shows typical results observed for the Positive Control, Negative Control, serum from uninfected individuals, and serum from SARS-CoV-2 patients. When using the cutoff criteria described below to determine if a sample is positive for anti-CoV-2 Spike Protein antibodies, samples diluted 1:200 must be compared to the undiluted Negative Control.
NOTE: Sample storage/handling, including heat-inactivation of samples, can potentially affect observed signals. Therefore, it is strongly recommended that in addition to the Positive and Negative Controls included with the kit, the user includes their own negative and positive patient samples as controls when running the assay in order to establish an appropriate cutoff value.
Add 100 µL of STOP Solution to each well. Shake gently for a few seconds.
NOTE: Initial color of positive reaction is blue, which changes to yellow upon addition of STOP Solution.
posted August 2020
Protocol Id: 2204
The cause of the COVID-19 pandemic is a novel and highly pathogenic coronavirus, termed SARS-CoV-2 (severe acute respiratory syndrome coronavirus-2). SARS-CoV-2 is a member of the Coronaviridae family of viruses (1). The genome of SARS-CoV-2 is similar to other coronaviruses, and is comprised of four key structural proteins: S, the spike protein, E, the envelope protein, M, the membrane protein, and N, the nucleocapsid protein (2). Coronavirus spike proteins are class I fusion proteins and harbor an ectodomain, a transmembrane domain, and an intracellular tail (3,4). The highly glycosylated ectodomain projects from the viral envelope surface and facilitates attachment and fusion with the host cell plasma membrane. The ectodomain can be further subdivided into host receptor-binding domain (RBD) (S1) and membrane-fusion (S2) subunits, which are produced upon proteolysis by host proteases at S1/S2 and S2’ sites. S1 and S2 subunits remain associated after cleavage and assemble into crown-like homotrimers (2,4). In humans, both SARS-CoV and SARS-CoV-2 spike proteins utilize the angiotensin-converting enzyme 2 (ACE2) protein as a receptor for cellular entry (5-7). Spike protein subunits represent a key antigenic feature of coronavirus virions, and therefore represent an important target of vaccines, novel therapeutic antibodies, and small-molecule inhibitors (8,9).
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