SARS-CoV-2 Spike Protein Antigen Qualitative ELISA Assay Kit
The SARS-CoV-2 Spike Protein Antigen Qualitative ELISA Assay Kit is For Research Use Only
Size: 12×8 wells
Sensitivity: 6.8 ng/mL
Incubation Time: 3 hrs
Sample Type: Serum, plasma, and cell culture supernatants
Sample Size: 100 µL
Alternative Name: Coronavirus, SARS-CoV, Covid-19
The method employs sandwich ELISA technique. Monoclonal antibodies are pre-coated onto microwells. Samples and standards are pipetted into microwells and Human SARS-CoV-2 (Covid-19) spike proteins present in the sample are bound by the capture antibodies. After incubation the wells are washed and followed by HRP- conjugated Detection Antibody is pipetted and incubated to form a complex. After washing microwells in order to remove any non-specific binding, the substrate solution (TMB) is added to microwells and color develops proportionally to the amount of Human SARS-CoV-2 (Covid-19) spike proteins in the sample. Color development is then stopped by addition of stop solution. Absorbance is measured at 450 nm.”
Sample Preparation and Storage
Specimens should be clear and non-hemolyzed. Samples should be run at a number of dilutions to ensure accurate quantitation.
Blood is taken by venipuncture. Serum is separated after clotting by centrifugation. Repeated freezing and thawing should be avoided. If samples are to be used for several assays, initially aliquot samples and keep at -20°C.
Samples should be diluted 1:1000 (v/v) for optimal recovery, (for example 1 ul sample + 999 ul sample diluent) prior to assay. In cases where matrix interferences is under or over observed, the samples may be diluted with Sample Diluent accordingly.
The samples may be kept at 2 – 8°C for up to three days. For long-term storage please store at -20°C.
Note: Grossly hemolyzed samples are not suitable for use in this assay
Cell Culture Supernates - Remove particulates by centrifugation and assay immediately or aliquot and store samples at -20℃ or lower temperature. Avoid repeated freeze-thaw cycles. If the use of original supernate sample or low dilution (<5 fold) are necessary due to the expected low concentration of antigen supernates need be adjust to neutral pH condition before assay.