SARS-CoV-2 related products

We provide a wide selection of SARS-CoV-2 recombinant antigens and serological antibodies to support the IVD test manufacturers in COVID-19 related assay development.

Ordering information

Recombinant SARS-CoV-2 antigens:

  • Nucleocapsid (N)

100 µg, 710081
1 mg, 710082
5 mg, 710083

  • Spike S1

100 µg, 710090
1 mg, 710091
5 mg, 710092

  • Spike RBD 1 (aa 331-524)

100 µg, 710093
1 mg, 710094
5 mg, 710095

  • Spike RBD 2 (aa 319-541)

100 µg, 710096
1 mg, 710097
5 mg, 710098

Serological anti-human IgG, IgM, and IgA antibodies:

  • Anti-h IgA

8203 SPRN-5, 100101

  • Anti-h IgG

7701 SPRN-5, 100087
7701 SPRN-10, 100152

  • Anti-h IgM

7408 SPRN-5, 100084

EastCoast Bio products

  • Anti-SARS-CoV-2 Nucleocapsid monoclonal antibodies
  • Anti-SARS-CoV-2 Spike 1 protein monoclonal antibodies
  • Recombinant SARS-CoV-2 Spike 1 and Nucleocapsid antigens



  • Recombinant SARS-CoV-2 Brazil variant spike protein antigen
  • SARS-CoV-2 Spike 1 Neutralizing monoclonal antibodies

Please visit to find more information about these products.

Lee Biosolutions products

We support Covid-19 related test development by providing native control proteins and biological specimens, including:

  • Control material proteins for IgG, IgM and IgA
  • Rheumatoid Factor concentrate used in interference studies
  • Biological products including:
    • COVID-19 cross-reactivity serum/plasma panel
    • COVID-19 confirmed positive & negative serum/plasma samples
    • COVID-19 confirmed positive & negative nasopharyngeal swabs
    • COVID-19 confirmed positive & negative saliva samples
    • Nasal fluid collected prior to November 2019

Please visit to find more information about these products.

Contract Manufacturing Service

We can offer large-scale production of monoclonal antibodies through our contract manufacturing service.

  • Industrial-scale manufacturing of monoclonal antibodies
  • Batch sizes scalable from 1 gram to 1 kilogram
  • Highest quality and consistency
  • We meet ISO 13485 and FDA QSR requirements
  • All monoclonal antibodies are produced in cell cultures, no animals are used in production
  • You can rely on us and on our on-time deliveries
Please stay in touch with your local business contact or contact us by email:
Customer service and orders:

MedixMAB™ and MedixAntigen products:
USA, Europe, other regions: moc.acimehcoibxidem@sredro
China: moc.acimehcoibxidem@anihcxidem
EastCoast Bio products:
moc.oibtsaoctsae@sredro, webshop:
Lee Biosolutions products:
moc.oibeel@redro, webshop:

Local business contacts

Global technical product support:

Medix Biochemica, Lee Biosolutions and EastCoast Bio product lines: moc.acimehcoibxidem@troppushcet