The RELMA auto-mapper takes the available local test information and returns the best matches in LOINC. In this example, the local data was “Hgb” (test name), “blood” (the specimen), and “g/dL” (the units of measure). The table of likely LOINC matches illustrates the specificity of different parameters including units, method, specimen, and statistical rank. The red box indicates the best match in this example.