- Testing Centers
- Physician Offices
How Does PCR COVID-19 Work?
Currently, patients may receive free testing at health centers throughout the United States. The healthcare provider takes a swab of the nasal passage. The SARS-CoV-2 virus uses RNA, which the lab converts from single-stranded RNA to double-stranded DNA using reverse transcription. The lab then separates the two DNA template strands. Primers then attach to the DNA strands.
If the primers match the DNA, the DNA amplifies, and the sample is positive for COVID-19. If the sample shows no amplification, the result is negative for COVID-19. The primer can only amplify from viral material, making false positives extremely rare.
Testing Results for Healthcare Providers and More
- Nursing Homes
- Sports Team
- Venues and Arenas
- Universities and Schools
- And More
The COVID-19 Testing Process
Identify COVID-19 with accurate and early detection technology.
Reasons Patients Need A PCR COVID-19 Test
Patient has COVID-19 symptoms
Patient had exposure to COVID-19 at least five days prior
Screening required for school, work, congregate setting, or other reason
Screening before and after travel
Screening recommended or required by a healthcare professional
Follow up to a positive rapid COVID test
COVID-19 testing is available without a physician's referral for free.
What Is the Timeframe for Test Results?
What Are Inconclusive and False Negative Results?
When a result is "inconclusive," we recommend repeating COVID-19 testing. The test may have picked up the residual virus from someone recovering from a COVID-19 infection and who is, in fact, no longer infected. Alternatively, the test could have picked up a minute amount of contaminant during the collection or processing.
"False-negative" results can occur when a person has COVID-19, but the test results are negative. At the very early stages of an infection, the amount of virus can be too low for the COVID-19 test to detect the virus.
We recommend repeating the test if you develop symptoms, even if a recent COVID-19 test returned negative. Use a PCR test in this situation because antigen tests are more likely to give a "false negative" result.
Precise Healthcare Solutions
PCR COVID-19 tests empower healthcare providers and patients with the information needed to make confident treatment plans. Plus, accurate COVID-19 tracking improves public health.
Learn more about how COVID-19 professional testing benefits healthcare providers and other industries. Contact LUX Diagnostics today.