Interfering Ultraviolet-Absorbing Compounds as Sources of Error in Common Clinical Chemistry Tests

Abstract

Fourteen spot tests and color reactions were selected for their potential applicability to the problem of identifying urinary components separated by a high-resolution analytical system. These tests were screened with an inventory of 74 biochemicals of current interest. The results of this testing program are given and reveal the lack of specificity inherent in many tests which are sometimes assumed to be free of interference.