The St. John’s United Diagnostic Laboratory was established to provide rapid and reliable in-house COVID-19 testing and Influenza testing for St. John’s United communities, neighboring health care and elder care institutions, educational institutions, not-for-profit organizations, businesses, and individuals. Types of screening tests offered include COVID-19 Laboratory PCR, COVID-19 Rapid PCR, COVID-19 Rapid Antigen, Influenza A/B and COVID-19 Antigen Test within one test and with a physician’s directive. Phone (406) 655–5726 for more information.


Available at St. John’s United Gainan Commons
North Parking Lot ‐ 502 N 30th Street, Billings, MT 59101

Results will be provided same day for rapid tests
Results will be provided within 48 business hours for PCR testing

COVID-19 Rapid Antigen Test: $25
COVID-19 Rapid PCR Test: $100
COVID-19 Laboratory PCR Test: $100

SJU will report results to patient or guardian and State
No charge for SJU Staff

Hours: Monday – Friday (See appointment times on sign-up link)

Insurance will not be billed, receipts and documentation provided.
FSA and HSA cards are accepted.


Vaccinating our community is the best method to protect yourself, loved ones and neighbors from contracting severe cases of COVID-19. St. John’s United is dedicated to the vaccination effort and has the ability to vaccinate long term care residents, healthcare workers and the public at large. Contact the St. John’s United Laboratory at 406-655-5726 for specifics or, simply make an appointment online.

There is no cost to get vaccinated nor do you need identification.

Please join the fight to stop the spread of COVID-19. Get vaccinated.

Want to know more about the COVID-19 vaccine? CDC has the most reputable information regarding the benefits of getting vaccinated, key things to know, and frequently asked questions about the three approved vaccines.

Center for Disease Control COVID-19 Vaccine Information

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