JAMA. 1926;86(3):200. doi:10.1001/jama.1926.02670290040017.
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So-called laboratory diagnosis has to some extent at least been recently subjected to extremely critical evaluation. One sometimes hears whispers of dissatisfaction with its accomplishments or the rumblings of opposition to its claims. We are reminded that the vaunted "laboratory aids" often do no more than furnish a verification of that which the well trained bedside clinician can discover through the peculiar technic or devices that are characteristically his own. Consequently the clinical chemist is now and then put into the position of a defender of his activities. It should be borne in mind, however, as Morse1 has recently expressed it, that for him who aims to utilize chemistry in the study of the human being in health and in disease, chemistry is a means to an end and not an end in itself. Chemistry may become the tool for the investigation of the structure and functions of the


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