There are hundreds of different diagnostic tests performed in clinical laboratories. Most of these tests are of limited value and are relevant only to highly select patient groups. In fact, a small minority of tests can be considered “routine” and of general value for common disease screening or monitoring purposes.
The Provincial Laboratory Formulary (PLF) provides an up to date and searchable registry of orderable laboratory tests and laboratory test information. This formulary lists funded tests performed at local accredited clinical laboratories as well as tests referred-out to accredited reference laboratories for testing. Funded tests approved for the PLF are paid for through regular health care funding streams and clinical laboratory testing budgets.
The purpose of the PLF is to:
- Determine which laboratory tests are available for ordering within the province of Newfoundland and Labrador.
- Identify funded tests that support current standards of practice, are supported by evidence, and are important to optimizing patient health outcomes.
- Promote best practices by use of effective laboratory testing and evidence-based testing strategies.
- Minimize laboratory testing costs which, in turn, optimizes efficiency and value of laboratory services.
- Direct physicians to the most effective tests for their patients.
- Provide information on obtaining approval for tests, if required.
- Enhance the responsibility and accountability to all involved in the laboratory testing process.
- Help identify, for removal, any outdated and/or redundant laboratory tests, based on current standards of practice and evidence.
Tests listed in the PLF are categorized based on a tier system. The tier system defines who can order a test and under what conditions. The tier system identifies four groups of tests:
- Tier 1: No special restrictions based on medical specialty and requires no special approval process.
- Tier 2: Restricted to medical subspecialties or special conditions.
- Tier 3: One-time authorization by a designated laboratory specialist is required.
- Tier 4: Tests previously reviewed, but not approved for the PLF.
Maintenance of the PLF is performed by the Provincial Laboratory Formulary Advisory Council (PLFAC). This multidisciplinary group consists of experts and representative stakeholders in laboratory testing including clinicians, laboratory physicians, laboratory scientists, health information specialists, and health care decision makers.
For further information on the PLFAC, or for information on how to have a test considered for the PLF, please use the links below:
For information on local guidelines and resources for appropriate laboratory test utilization, please use the links below: