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It is common to find a certain percentage of. freshly voided urines to present, upon examination, a variable degree of clouding which may have for its cause many different conditions. Among the most striking of these are those dependent upon thermic fluctuations, and in this connection reference shall be made to the changes produced by exposure of the urine to a temperature near the freezing point. With the approach of marked climatic change and a decided fall in the mercury, the number of turbid specimens collected from private practice and dispensary clinics is greatly increased, while specimens collected from hospital patients are seldom influenced by cold. In the urines brought to the laboratory of the Philadelphia, Pennsylvania and Medico-Chirurgical hospitals during the fall and winter months, the writer seldom observed any increase in the number of turbid urines. It was often noticed in specimens brought by patients to the dispensary
BOSTON LN. COLD WEATHER ACCOUNTABLE FOR TURBIDITY OF THE URINE.. JAMA. 1902;XXXVIII(7):446–447. doi:10.1001/jama.1902.62480070012001e
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