Attention: Clinical Laboratories

Please share this information with:

  • Medical Director, Laboratory Services
  • Laboratory Manager(s)

For laboratories and testing sites that are using a Laboratory-Developed Test (LDT) that has not received a U.S. Food and Drug Administration Emergency Use Authorization (EUA), refer to these tips and links when selecting codes to report test results to public health agencies:

  • LOINC and SNOMED-CT codes should identify the test that is being performed, not the in-vitro diagnostic (IVD) device used to process the test.
  • The Device Identification (DI) should include values for both the test kit and the  IVD device.
    • The test kit is identified by “test kit name_manufacturer.” If the test kit has received an EUA, you may use the test kit name provided in the instructions for use. The manufacturer is the name of the laboratory that developed the test.
    • The IVD DI may be obtained from the manufacturer or found using ACCESSGUDID.

Laboratories may seek authorization for LDTs, but are not required to do so. If the LDT receives an EUA, the EUA will be added to the LOINC In-Vitro Diagnostic (LIVD) Test Code Mapping for SARS-CoV-2 Tests.

Online resources:


If you have any questions, please contact