Back to Work Coronavirus Test

Governments and businesses around the world are trying to develop safe methods to help return employees to work and restore business operations.  This has led to the development of tests to test for symptoms such as high temperatures to prevent potentially infected employees from spreading the virus.  Tests for the presence of COVID-19 antibodies have also become an important tool in potentially determining which employees are able to return to work.

Many organizations are working to find effective methods of balancing the need to continue operations with the health and safety of their employees.  An article from Wilmer Hale Client Insights, “COVID-19: Screening Employee Temperatures: What Employers Need to Know”, states: “Recently, several states and local municipalities, including, without limitation, Ohio, Delaware, San Francisco, and Santa Clara County, have implemented orders or issued guidance urging or requiring that temperature checks be implemented before employees are permitted to report to work.”

Additionally, the Center for Disease Control recently released an Interim Guidance for Businesses and Employers to Plan and Respond to Coronavirus Disease 2019 (COVID-19) expressly directs that “Employees who have symptoms (i.e., fever, cough, or shortness of breath) should notify their supervisor and stay home.”  Many employers are offering temperature & antibody testing to employees in order to improve employee health and safety in compliance with this guidance.

Both the Temperature Reading and COVID-19 Antibody tests can be performed on-site at your business via one of our Mobile labs. Employers may also send their employees to one of our Mobile lab’s scheduled locations for testing. Contact us to schedule a test or find a mobile lab near you.

Non-Contact Infrared Thermometer Readings

It is not the intention of CTG to diagnose an acute or active disease or illness in our clients. However, due to the nature of the spread of COVID-19, all clients shall first have a temperature taken prior to entering the facility in order to identify those clients who might be experiencing a higher body temperature or fever.

For our testing purposes, any client whose body temperature exceeds 100 degrees Fahrenheit should not be permitted to enter the facility or take the antibody test.

  • Mobile on-site thermometer readings (minimum of two-hour requirement)
  • Currently Servicing Los Angeles and Orange County, CA

Contact us to learn more

Coronavirus Antibodies Testing

COVID-19 Antibody testing does not directly diagnose the RNA Virus. Rather, antibody testing gives essential information about who was previously ill and has since recovered. New studies suggest that antibodies (white blood cells) made to fight COVID-19 may carry on for years, making recovered people non-infectious and non susceptible to falling sick again.

Antibody tests are an effective way to evaluate immunity. Because our knowledge of COVID-19 immunity is still evolving, the following recommendations are conservative estimates for patient behavior after testing and are modeled after SARS-CoV comparison research and H1N1 Antibody distributions. These diseases were used for modeling due to similar pathogenesis and persistent antibodies/immunity status for several years after exposure or vaccination.

Please note that all antibody tests should be performed on completely asymptomatic individuals– conservatively, at least seven days since last symptom or never symptomatic. If test is performed earlier than that, the clinical reliability may be compromised.

  • COVID-19 Antibody Tests (POCT COVID-19 Antibody Test) – Results available in 10-15 minutes
  • Using a single finger stick test, you can learn if you were exposed to the virus and if your body has built up the necessary immunity from antibodies that would make it safe for you to return to work.
  • Currently Servicing Los Angeles and Orange County, CA

Contact us to learn more

Antibody Testing Results
Negative IgG, Negative IgM (Two Possibilities):
  • The patient has never encountered COVID-19 and is healthy but susceptible. Continue social distancing protocols.
  • An unlikely secondary option: The patient is latently infected with COVID-19 and maybe a carrier, even without symptoms. Continue social distancing protocols.
Negative IgG, Positive IgM:
  • Early stages of antibody response. Possible virus carrier. Continue social distancing for at least 5 to 7 additional days after cessation of symptoms.

Positive IgG, Positive IgM:

  • Recent infection. Suggests possible functional immunity. It may be safe to return to work if asymptomatic for at least seven (7) days. Follow local, state, or federal guidelines regarding social distancing and return to non-essential jobs.

Positive IgG, Negative IgM:

  • Past infection. Suggests functional immunity. It may be safe to discontinue social distancing. It may be safe to return to work. Follow local, state, or federal guidelines regarding social distancing and return to non-essential jobs.
back to work coronavirus test
Who Should Be Tested?
  • People suspect they already have had COVID-19 and are now asymptomatic ( at least 7 days minimum without displaying symptoms) and would like to check their immunity in order to return to back to work.
  • Employers seeking to learn what portion of their employees are potentially immune/non-infectious.
Important Information

These tests are authorized under Subsection IV.D. of the Policy for Diagnostic Tests for Coronavirus Disease-2019 during the Public Health Emergency, issued on March 16, 2020.

CTG provides the content on this page for informational purposes only, it is not intended as medical advice, or as a substitute for medical advice of a physician. CTG makes no warranties or representation regarding the accuracy of information on this page.


  1. The FDA has not reviewed this test.
  2. Negative results do not rule out SARS-CoV-2 infection, particularly in those who have been in contact with the virus. Follow-up testing with a molecular diagnostic should be considered to rule out infection in these individuals.
  3. Results from antibody testing should not be used as the sole basis to diagnose or exclude SARS-CoV-2 infection or to inform infection status.
  4. Positive results may be due to past or present infection with non-SARS-CoV-2 coronavirus strains, such as coronavirus HKU1, NL63, OC43, or 229E.
Our philosophy

“The degree to which misconduct remains unidentified is determined by how well employees are screened, trained, and supervised. Recognition, corrective action, and training are necessary steps to cultivating and preserving a healthy and profitable company.”

George J. Ramos, Jr. Co-founder

We are proud to be certified with
SBA 8a
Department of General Services
SBA 8a
Department of General Services
Delivery Methods
  • Conduct business with Integrity and Ethics
  • Proving the highest quality services
  • Provide Timely and Accurate Information
  • Creating Wealth Through Profits & Growth
  • Conduct business in an environmentally responsible manner
  • Build a Positive and Professional Team
  • Pursue Growth and Learning
  • Embrace and Drive Change
  • Client Value Creation
  • Foster a Safe Workplace for Employees
  • Care and contribute to our Communities
Print Friendly, PDF & Email