COVID-19 Testing & Data
The Loudoun COVID-19 Dashboard shows data reported to the Virginia Department of Health and includes Loudoun cases by ZIP Code, the “gating criteria” that are important in determining reopening timelines regionally and in the Commonwealth and other key measures.
Diagnostic Testing versus Serologic Testing
- Diagnostic testing is the throat or mouth swab that has been in use for several months to test whether someone is infectious with COVID-19 at that time.
- Newer serologic tests look for previous infection to COVID-19 by checking for antibodies in the blood. Current serologic tests may not have gone through FDA review (see FDA statement on Serological Tests) and, more importantly, may not be able to tell the difference between strains of coronavirus (see CDC information on coronavirus types).
- If you are considering an antibody test, first ask whether the test is specific for COVID-19; if not, then a positive result could give you a false sense that you are immune to COVID-19 when in fact you just had the common cold.
Not everyone needs to be tested for COVID-19.
- If you have been in contact with someone infected with COVID-19 or you have symptoms—cough, fever, and shortness of breath —call your doctor or health care provider before visiting.
- There is no treatment specifically approved for this virus and most people have mild illness and can recover at home.
- Well individuals do not require testing. If you think you have been exposed to COVID-19 and develop a fever and symptoms, such as cough or difficulty breathing, call your doctor. Continue to follow preventive measures recommend by the Centers for Disease Control, such as frequent hand washing, avoiding crowds and staying at least 6 feet away from other people.
Doctors decide on COVID-19 testing.
- Health care providers will ask you questions to determine whether you need a COVID-19 test.
- Current criteria are available from the CDC. However, it is important to note that individual doctors’ offices and the operators of drive-through testing services may use varying criteria
- For the test, a health care provider will need to collect a specimen, which is a nasal or throat swab that is sent to a lab.
- The lab sends results to the doctor who shares the results with you. The lab will also alert local health departments of all negative and positive test results.
While supplies of these tests are increasing, it may still be difficult to get tested.
- It is important that these tests be available to those at highest risk of complications from infection and those essential to maintaining health care delivery and services and public safety.
- If your doctor or health care provider doesn’t test you for COVID-19, you don’t meet the criteria.
- Government agencies and health care providers are working to increase access to testing, while limiting exposure among the population.
- As test supplies increase and additional laboratories provide testing, these challenges are likely to decrease.
Note: The Loudoun County Health Department does not provide testing or evaluate ill individuals.
Receive updates from Loudoun County
- Text LCCOVID19 to 888777 to receive text alerts from Loudoun County about COVID-19
- Sign up for email and text updates on COVID-19 in Notify Me, Blogs category
- Follow the Loudoun County Government Facebook Page and @LoudounCoGovt
Loudoun County Public Schools
Contact us with Questions
- Email the Health Department
- Call the information line: 703-737-8300
- Monday-Friday, 9:00 a.m. to 9:00 p.m.
- Saturday-Sunday, 9:00 a.m. to 5:00 p.m