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September 18, 1926


JAMA. 1926;87(12):943. doi:10.1001/jama.1926.02680120053018

The modern applications of analytic chemistry to the study of the blood, whereby it has become possible to secure comparatively elaborate data from a small sample, already seem destined to rival the diagnostic advantages that have long accrued from microscopic investigations of the blood. The chemical components that remain in solution are beginning to tell their story to the competent examiner, just as the various types of formed elements have long been doing. Erythrocytes, leukocytes and bacteria no longer are the only features of immediate interest in the clinical study of the blood. Sugar and the various types of nitrogenous catabolites, such as urea, creatinine and uric acid, can be measured quantitatively with comparative ease. Each item thus established has some direct significance to him who is attempting to read the story of the body's physiologic deportment; and of late calcium, phosphorus and chlorine have become determinable with comparative facility

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