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December 13, 1941


JAMA. 1941;117(24):2095. doi:10.1001/jama.1941.02820500077029

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To the Editor:—  It has recently been called to my attention by a number of physicians that a new cutaneous test for the diagnosis of pregnancy based on the report of Falls, Freda and Cohen (Am. J. Obst. & Gynec.41:431 [March] 1941) is now being actively detailed by a commercial pharmaceutic organization as a "simplified, economical, reliable diagnostic skin test for pregnancy."A recent report by Dr. Arnold F. Snyder and myself (ibid.42:738 [Oct.] 1941) lists one hundred and fifty such tests using the exact technic described by Falls and his co-workers, in which an accuracy of only 75 per cent could be attained.A word of caution should be interposed at this point in order to warn the practitioner not to be hasty in placing too much confidence in this reaction until further reports in the literature can support the contention of Falls and his

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