Nucleic acid amplification. A laboratory method used to target and amplify a single DNA or RNA sequence for detecting and identifying (typically) a microorganism. NAA tests for M. tuberculosis complex are sensitive and specific; they can accelerate confirmation of pulmonary TB disease.
National Accounts Administrator - This is the person at each AOPD dealership that is responsible for coordinating and assisting in all aspects of national account contract sales, marketing, contract administration, set up and sales reporting.
NEUTRON ACTIVATION ANALYSIS. The process of activating materials by neutron absorption then measuring the emission of characteristic photons on decay to determine the relative abundance of elements in an object.