Covid-19 Products

Accelerate your SARS-CoV-2 research and development with Covid-19 products and services that enable multiplexed, high-throughput, and quantitative studies.

Research Tools You Can Rely On

Since becoming the first company to commercialize the planar protein array, we have been committed to helping our customers conduct their research more quickly, deeply, and with heightened confidence. The unprecedented challenge presented by the sudden and dramatic spread of SARS-CoV-2 led us to strengthen our commitment and expand our support for scientists like you.

Take advantage of our wide range of high-quality Covid-19 products which are manufactured and shipped from our facilities in the United states, for reliable quality and fast deliveries. From ELISA and PCR kits to patient samples and pseudovirus services, RayBiotech has everything you need to research SARS-CoV-2 from every vantage point.

Covid-19 Product Categories


Uncover the immune response to SARS-CoV-2 with monoclonal and polyclonal antibody detection and characterization.


Confidently detect SARS-CoV-2 IgG, IgM, and IgA antibodies with our indirect and sandwich ELISA kits.

PCR Kits

Skip RNA extraction or avoid PCR machines entirely with our innovative PCR kits.
Verify the virus presence by visual color inspection with our rapid, convenient, and innovative PCR kits.

Binding Assays

Experience rapid, high throughput screening of Spike-receptor inhibitors that facilitate SARS-CoV-2 viral entry.


Investigate structure and infection capacity with our comprehensive catalog of recombinant SARS-CoV-2 proteins.

Protein Arrays

Analyze antibody isotype binding to specific viral antigens in serum, plasma, and other liquid sample types.

Sample Collection

Easily collect samples for RNA, DNA, Antibody, and Protein analysis with our comprehensive collection kits.

Patient Samples

Safely accelerate your research with samples from acute & recovered COVID-19 patients.

Pseudovirus Service

Advance your discovery with cell culture research through our COVID-19 pseudovirus service.

Popular COVID-19

New Products

What customers are saying

“The kit [COVID-19 S-Protein (S1RBD) ELISA Kit Cat# ELV-COVID19S1] arrived very quickly and was very easy to use following the manual. I used plasma samples from various groups of patients and the results came out very nicely!”


Boston Children’s Hospital

“​​I'm so glad I found these vaccinated samples on RayBiotech's website. I asked for specific details on these samples and got them within minutes! This is highly appreciated! Thank you!”


Almog Diagnostic


Featured Service

Covid-19 Pseudovirus Services

RayBiotech's COVID-19 pseudovirus service enables the study of the SARS-CoV-2 virus in cell culture. This service is ideal for screening patient serum for neutralizing antibodies and validating inhibitors of the Spike-ACE2 interaction.

Covid-19 Biology 101

Covid-19 Proteins

The outside of the SARS-CoV-2 viral particle is composed of 4 main proteins: spike (S), envelope (E), membrane (M), and nucleocapsid (N) protein.1 The S protein is required for the virus to enter human cells.

Viral Entry

The virus enters the cell through interactions with transmembrane proteins ACE2 and TMPRSS2.2

Besides being expressed on the surface of cells, ACE2 is also found in the lung, small intestine, and adipose tissue.3

Immune Response

SARS-CoV-2 can trigger a "cytokine storm" in the lungs, characterized by a rapid, simultaneous release of several inflammatory proteins.4 This could explain tissue and organ damage that occurs during Covid-19.

Covid-19 Diagnosis

Antibodies, viral load, and clinical symptoms determine COVID-19 status. Physicians use two tests to achieve an accurate diagnosis: nucleic acid amplification tests (NAATs) that include qPCR tests and antigen tests.5

Achieve your objectives faster with custom testing services

Whether you’re short on time, short on resources, or just need a trusted expert to complete a stage in your research, we’ve got you covered. With our comprehensive suite of services, we’re excited to help you move your research and discovery studies forward.

Here are some of the top services that complement our Covid-19 products.

Quantitative Proteomics Services

Our experienced service department can quantitatively detect up to 1200 human, 640 mouse, 282 rat, 50 porcine, and 30 bovine proteins with our GLP-certified Quantibody® Multiplex ELISA platform.


  • Trust your findings with our automated slide processing system and careful, thorough data analysis that ensures efficient, high-quality, reproducible results.
  • Save money and run more tests with the Quantibody® Multiplex ELISA Array. More cost-effective than traditional ELISA!
  • Enjoy limitless customizations with assays suitable for diverse sample types.
  • Get more out of your samples with low sample volume requirements.
  • Confidently review your full report, complete with raw data and step-by-step calculations giving you insight into exactly what we did.

Curious how our quantitative proteomics services can help your labs?

Discovery Proteomics Services

The discovery proteomics process allows for the identification of key proteins across multiple pathways and biological processes while minimizing time and effort. Once identified, these proteins can be verified and validated in a larger number of samples.

Design principles and service options:

  • Our assays can identify up to 6000 human, 1308 mouse, 1500 rat, 50 porcine, 30 bovine, or 500 rabbit proteins.
  • We offer two different types of array designs and can help you choose the best platform for your study needs:
    • Label-based platform for screening a large number of targets.

      We directly conjugate biotin to the proteins in your sample and detect proteins that bind to the array using a streptavidin-conjugated fluor. Because only a single antibody is used—the antibody immobilized to the slide—there is no need to optimize capture-detection antibody pairs, which removes a major constraint on array size.

    • Sandwich-based platform for sensitive detection.

      These arrays use a typical sandwich-ELISA design, where capture antibodies are printed on the slide and sample incubated with the array. Bound sample is detected by a cocktail of biotinylated detection antibodies and visualized by a streptavidin-conjugated fluor.

Want to see how our discovery proteomics services can advance your research?

Small Molecules / Inhibitors

Name Catalog # CAS # Target Candidate
Arbidol HCl 331-11756 131707-23-8 Viral spike glycoprotein for binding to host cell receptor ACE2
Ritonavir 331-11642 155213-67-5 HIV Protease
Lopinavir 331-11643 192725-17-0 Coronavirus main protease 3CLpro
Darunavir 331-11645 206361-99-1 HIV Protease
Ribavirin 331-10301 36791-04-5 RNA-dependent RNA polymerase
Chloroquine diphosphate 331-11962 54-05-7 Malaria (endosome/ACE2)
Nitazoxanide 331-11871 55981-09-4 Viral protein expression
Camostat mesilate 332-10779 59721-29-8 Transmembrane protease, serine 2, primes S protein to facilitate its binding to ACE2
Hydroxychloroquine Sulfate 331-21357 747-36-4 Malaria (endosome/ACE2)
Baricitinib Phosphate 332-10769 1187595-84-1 JAK kinase that regulate the inflammatory processes

Publication Highlight: Researchers Trick Covid-19 with a Lung Spheroid Cell Decoy

Exploiting SARS-CoV-2’s use of the angiotensin-converting enzyme 2 (ACE2) for host cell entry, Zhenhua, et al., (Nat Nanotechnol. 2021 Aug;16(8):942-95) created lung spheroid cell (LSC) membrane nanovesicles coated with ACE2 to act as “nanodecoys” for virus binding. Since the LSC-nanodecoys bind to the SARS-CoV-2 spike (S) protein, they can compete with cell surface ACE2 for extracellular virus, generating LSC-nanodecoy-SARS-CoV-2 complexes that trigger a phagocytic response and viral elimination.

As a result, the LSC-nanodecoy may be able to prevent viral spread and mitigate damaging long-term effects of infection.

Furthermore, unlike SARS-CoV-2 variants that constantly mutate, ACE2 receptors on human host cells remain constant and unchanging, making this research particularly promising for treating Covid-19 throughout SARS-CoV-2 evolutions.

Zhenhua et al. used RayBiotech’s Mouse Cytokine Array C1000 to quickly and efficiently analyze their blood samples.


Cytokine array analysis of various inflammatory cytokines (j) in the serum 3 d after treatment: control (f), LSC-nanodecoy (g), SARS-CoV-2 mimic (h) and SARS-CoV-2 mimic plus LSC-decoy (i). IFN-γ, interferon γ; IL, interleukin; M-CSF, macrophage colony-stimulating factor; POS, positive control; TNF-α, tumor necrosis factor α.

Related Services

Related Covid-19 Products


  1. Astuti I, Ysrafil. Severe Acute Respiratory Syndrome Coronavirus 2 (SARS-CoV-2): An overview of viral structure and host response. Diabetes Metab Syndr. 2020;14(4):407-412. doi:10.1016/j.dsx.2020.04.020
  2. Hoffmann M, Kleine-Weber H, Schroeder S, et al. SARS-CoV-2 Cell Entry Depends on ACE2 and TMPRSS2 and Is Blocked by a Clinically Proven Protease Inhibitor. Cell.2020;181(2):271-280.e8. doi:10.1016/j.cell.2020.02.052
  3. Expression of the SARS-CoV-2 cell receptor gene ACE2 in a wide variety of human tissues | Infectious Diseases of Poverty | Full Text. Accessed September 16, 2022.
  4. Zhao M. Cytokine storm and immunomodulatory therapy in COVID-19: Role of chloroquine and anti-IL-6 monoclonal antibodies. Int J Antimicrob Agents. 2020;55(6):105982. doi:10.1016/j.ijantimicag.2020.105982
  5. CDC. COVID-19 and Your Health. Centers for Disease Control and Prevention. Published February 11, 2020. Accessed September 16, 2022.