How Diagnostic test results are documented in how many locations?

Diagnostic test results are typically documented in multiple locations, primarily in the patient's electronic health record (EHR), which serves as the central repository for all health information. Additionally, results may be recorded in laboratory information systems (LIS) and radiology information systems (RIS). Some facilities may also maintain physical copies of results in patient charts or utilize patient portals for direct access by patients. This multi-location documentation ensures comprehensive tracking and accessibility of test results for healthcare providers and patients alike.