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J. Marion Bryant, M.D.
JAMA. 1949;141(2):148. doi:10.1001/jama.1949.02910020042021.
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To the Editor:—  My attention has been called to a letter in The Journal of August 6, page 1172, criticizing the article "Estimation of Urinary Sodium: A Simple Test For Patients on Low Sodium Diets" (J. A. M. A. 140:670 [June 25] 1949). The letter states, "Certain misconceptions and questionable features should be discussed publicly, lest they aid in perpetuating ideas and practices now considered out of date."The features pointed out by the correspondent are obvious but are inappropriate to the particular article. The test for the estimation of urinary sodium was proposed for two reasons: (1) because of its simplicity and (2) because clinical trial in our opinion has proved its value. That it is for use by the patient and is only a rough approximation of the urinary sodium with a "large error" was reiterated in the article several times. Furthermore, there is no implication in


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