09/20/2020: Lab Update: New Clarification on Guidelines for Testing for SARS-CoV-2 (COVID-19)

CDC's Laboratory Outreach Communication System (LOCS)

Audience: Clinical Laboratory Professionals

Level: Laboratory Update

On Friday, September 18, 2020, CDC revised its guidance on testing for SARS-CoV-2 (COVID-19) because of the significance of asymptomatic and pre-symptomatic transmission. The revised guidance reinforces the need to test asymptomatic persons, including those who have been in close contact with a confirmed case of COVID-19. See CDC’s Overview of Testing for SARS-CoV-2 (COVID-19) Web page.

Additional CDC resources:

  1. Interim Guidance for Rapid Antigen Testing for SARS-Cov-2
  2. Considerations for Use of SARS-CoV-2 Antigen Testing in Nursing Homes
  3. Frequently Asked Questions about Coronavirus for Laboratories
  4. Clinical Laboratory COVID-19 Response Calls
  5. CDC’s Laboratory Outreach Communication System (LOCS)
  6. COVID-19 Information for Laboratories
  7. CDC COVID-19 website
  8. Register for CDC Health Alert Network (HAN) notifications, including updates about COVID-19. Enter your email address, search for HAN, and sign up.

For more information, visit the Clinical Laboratory COVID-19 Response Call website.

For questions, please contact us at LOCS@cdc.gov.

Thank you,

The Laboratory Outreach Communication System

Laboratory Outreach Communication System | Division of Laboratory Systems (DLS)

Center for Surveillance, Epidemiology, and Laboratory Services (CSELS)

Centers for Disease Control and Prevention (CDC)

LOCS@cdc.gov

www.cdc.gov/csels/dls/locs

Page last reviewed: September 21, 2020