National Drug Data File (NDDF) Plus

First DataBank Medical Test Lexicon™


First DataBank Medical Test Lexicon is a controlled vocabulary developed by First DataBank for the specific purpose of supporting the population of drug-lab interference records in the Drug-Lab Interference Module (DLIM). Customers such as hospitals, pharmacies, physicians, and clinical laboratories use MTL in conjunction with DLIM to identify drugs that may falsely alter laboratory test results.

The lexicon provides a laboratory test vocabulary for laboratory test names, specimen types, and laboratory test method descriptions.

The Medical Test Lexicon is a concept-based vocabulary that uses Good Vocabulary Practice. Concepts have hierarchical relationships and are associated to dumb numbers that serve as stable identifiers. These stable identifiers have a retirement and replacement history mechanism that will always link them to lexicon's data.

The Medical Test Lexicon concepts are mapped to a subset of LOINC® (Logical Observation Identifiers Names and Codes) identifiers, a comprehensive standard laboratory test result vocabulary. The purpose of this mapping is to ensure that the relevant subset of LOINC codes used in patient medical records can trigger First DataBank's laboratory decision suppose using DLIM.