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This book reviews laboratory tests. The technics discussed by the author are given in the form of articles, most of which were published by the author as original articles in Spanish medical journals from 1928 to 1933. The book includes the following articles: 1. A modification of Volhard's method for quantitative determination of chlorides in urine. The modification consists in replacing nitric acid with an acetic acid solution (for destruction of organic matter in the urine) and in titrating the excess of silver nitrate (after precipitation of the chlorides has taken place) with a known solution of sodium chloride in the presence of yellow potassium chromate as indicator. 2. The technic of the Vernes perethynol test for the diagnosis of syphilis, as it is performed at the Institut prophylactique of Paris. Also a study of the sensitivity of the test and, in this connection, indications of advisability of verifying the
Técnicas de laboratorio clínico. JAMA. 1937;108(24):2067. doi:10.1001/jama.1937.02780240059027