Careers Home About Us » Locations & Services » Patient Connect » Ways to Give Back » Careers Laboratory Big Horn Hospital Association welcomes clients throughout Big Horn, Rosebud and Treasure counties in southeastern Montana. Through the extensive test menu offered clients have access to the highest levels of clinical and anatomic laboratory service and expertise. Incorporated in 1979, Big Horn Hospital Association has been serving patients throughout the region for over thirty (30) years. Today, Big Horn Hospital Association maintains a high level of dedication to patients, physicians, and other health care providers throughout Big Horn County and surrounding communities. The laboratory at Big Horn Hospital Association provides locally-based, rapid response testing, and around the clock clinical assessments from it’s state-of-the-art facility in Hardin. The laboratory is accredited by the State of Montana and the Clinical Laboratory Improvement Amendments Program (CLIA). © Big Horn Hospital Association Web Hosting by Zee Creative