<img src="https://ws.zoominfo.com/pixel/eCRg8hzy2qp0kNUl6E1g" width="1" height="1" style="display: none;">

COVID-19 Testing

cPass™ SARS-CoV-2 Neutralization Antibody Test

Specific Detection of SARS-CoV-2 Neutralization Antibodies

The cPass™ SARS-CoV-2 Neutralization Antibody Test is the first and only antibody test with FDA Emergency Use Authorization (EUA) to specifically detect neutralizing antibodies.

Contact Us to Learn More

Download One-Pager

Rapid Assessment of Immune Response to Today’s Vaccines

  • Blood test offers fast detection of neutralizing antibodies produced in response to vaccination or previous infection.
  • Results are available within 24 hours of lab receipt.
  • Neutralizing antibody testing is recommended after at least 7 days from known previous infection, 14 days from second dose of vaccination, or 10 days from a single dose vaccination if not previously infected.
  • A Positive or Negative result for the SARS-CoV-2 neutralizing antibodies indicates the presence of absence of neutralizing antibodies to the virus. Individuals should seek consultation with their HCP on this tests and guidance.

  • The test uses ELISA technology to specifically detect neutralizing antibodies to the receptor binding domain (RBD) of the spike protein of SARS-CoV-2.

Contact Us to Learn More

How do Neutralizing Antibodies Protect Against Protect Against COVID-19?

  • Neutralizing antibodies may be produced by the body in response to vaccination or previous SARS-CoV-2 infection.
  • These antibodies attach to the RBD of the spike protein that facilitates entry of the virus into human cells.
  • When neutralizing antibodies are attached to the RBD of the spike protein, the virus is blocked from entering by preventing the association with the ACE2 receptor on the human cell, thereby preventing infection.

Contact Us to Learn More

cPass is Part of the Biodesix WorkSafe™ COVID-19 Testing Program

We offer an end-to-end customized testing solution inclusive of physician consultation services, specimen collection kits, coordinated logistics, and billing support.

  • COVID rapid antigen and PCR testing to assess active infection
  • Antibody testing to assess previous infection or COVID-19 vaccine response
  • Results in 15 minutes to 24 Hours according to your customized testing program 

Contact Us to Learn More

“We are very pleased with the service Biodesix provided with the two samples for myself and our program manager.  The turnaround time as well as the process, was excellent!”


Marie Hanson

Global Maritek Systems, Inc.

“This has definitely been my best experience as a customer since I moved to the US two years ago. Great job!!!!”


Carlos Garcia, CEO

Applus+ IDIADA

"Biodesix helped Carroll College organize and test more than 1000 students on campus for COVID-19 over a one-week period. The Biodesix team was well organized, they responded to our questions promptly, and the turnaround time for testing results was as described. We are very satisfied with their work!"


Jennifer Glowienka

Carroll College

    Contact our team if you are interested in learning more about our COVID-19 testing program

    Reach out to our team