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COVID-19 Testing in Carroll County

Please note: There is currently high demand for testing across the state. If you are not able to get an appointment at our site, please check with your provider, urgent care, pharmacy, or the state site for other options: 

Sign up for testing at the Ag Center in Westminster using this testing form. A health care provider’s order is not required:

Testing Form / Registro de Pruebas

Registration will be closed during certain hours to allow our providers to enter people into the system. Registration will be open 8 am – 5 pm  and 7 pm – 10 pm daily.

Testing at the Ag Center:

  • Diagnostic PCR test will tell you if you have a current COVID infection
  • Located at 706 Agriculture Center Drive in Westminster
  • Testing is available every Tuesday, Thursday, and Sunday from 9 am – 12 noon. Check this web page or Facebook page for any changes. Please note, the testing center will be closed on Thursday, November 26th for Thanksgiving Day.
  • You must have an appointment to be tested.
  • You do not need a health care provider’s order.
  • You will not be charged for the testing.
  • We can test all ages. You may want to bring an extra person to hold or calm small children who are being tested, as our staff cannot help hold the child during the test.
  • Once you complete and submit the form above, our clinicians will enter it into the CRISP system, and you will receive a link to register for an appointment time.
  • Please allow 1 business day for the test request to be entered- multiple submissions can result in errors.
  • The testing center appointments can fill quickly. Please only register for an appointment if you are planning to come to our center. You may register for any state sponsored testing location
  • To cancel your appointment, please call the CRISP system hotline at 1-866-984-4405.
  • You must be in an enclosed vehicle; you cannot walk or bike up to the testing site.
  • You will remain in your car for the test, which is a nasopharyngeal swab. We can test the driver, passengers, or multiple people in the vehicle if they have appointments scheduled for the same day.
  • You will be called with your results, positive or negative, as soon as possible after they are received, likely within a few days after you are tested. However, with increased demand it may take longer to get your results.
  • If you have any questions or issues accessing testing, call our COVID-19 Call Center: 410-876-4848 Monday through Friday, from 8 AM – 5 PM.
  • Remember, testing just shows if you are infected on the day of the test. It can take 2-14 days for an infection to develop. You might test negative if the sample was collected early in your infection and test positive later during your illness. You could also be exposed to COVID-19 after the test and still spread the virus. 
  • A negative test does not mean you can stop taking precautions and end quarantine early.

Maryland Department of Health Testing FAQs

CDC Diagnostic Testing Information


Types of COVID-19 Testing 

Type of test

What it tells you

How it’s done

When you’ll get results

What you need to know


If you have a current COVID-19 infection

Detects RNA of the virus


Nose/throat swab; saliva (less common)

1-7 days 

Test results are highly accurate

*Best to get tested a few days after possible exposure when virus levels are high enough to test positive

Antigen test 

If you have a current COVID-19 infection

Detects proteins made by the virus


Nose/throat swab

Some may be very fast (15-30 minutes) and can be done in a healthcare provider’s office


Positive results are more reliable, but all test results should be confirmed with a PCR test


Antibody test

If you had a COVID-19 infection in the past and made antibodies to the virus

Blood test

Same day or 1-3 days, depending on test site

It does not show if you currently have COVID-19. A positive test does NOT mean that you are immune to future infections.

Testing for COVID-19 – CDC

COVID-19 Testing Basics – FDA


After testing:

Instructions after COVID-19 Testing at the Ag Center

Updated 11.23.2020