Evaluation of a paper strip test for the detection of niacin production by mycobacteria

A commercial reagent-impregnated paper strip test for the determination of production of niacin by mycobacteria has been evaluated. Safety, simplicity, uniformity, and stability were found to be inherent features of the test strips. Results compare favorably with those obtained using the Konno test as modified by Runyon and associates. Precautions which must be observed in performing this determination are listed.