1949
DOI: 10.1097/00000441-194906000-00010
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PROZONE PHENOMENON IN THE SERODIAGNOSIS OF SYPHILIS A Clinical Study

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Cited by 6 publications
(2 citation statements)
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“…More than half the false positive tests arose as a result of an isolated false positive Kahn reaction -a finding which is so common (Bossak and others, 1953;Fischer, 1950;Levitan and others, 1952) that a diagnosis of syphilis on such grounds would be unthinkable. If a positive flocculation test together with a positive complement-fixation test is taken as the minimum finding compatible with the serological diagnosis of syphilis (Beelar, Zimmerman and Manchester, 1949;Colquhoun, 1950), the overall incidence of false positive serology is reduced to 0-23 per cent., and the percentage of positive diagnostic tests ultimately considered false is reduced from 54*1 per cent. for a single test to 12-3 per cent.…”
Section: Resultsmentioning
confidence: 99%
“…More than half the false positive tests arose as a result of an isolated false positive Kahn reaction -a finding which is so common (Bossak and others, 1953;Fischer, 1950;Levitan and others, 1952) that a diagnosis of syphilis on such grounds would be unthinkable. If a positive flocculation test together with a positive complement-fixation test is taken as the minimum finding compatible with the serological diagnosis of syphilis (Beelar, Zimmerman and Manchester, 1949;Colquhoun, 1950), the overall incidence of false positive serology is reduced to 0-23 per cent., and the percentage of positive diagnostic tests ultimately considered false is reduced from 54*1 per cent. for a single test to 12-3 per cent.…”
Section: Resultsmentioning
confidence: 99%
“…Известен так называемый феномен, или эффект прозоны, когда у больного с «цветущим» сифилисом (вторичный, РСС) наблюдается отрицательный ре-зультат серологических реакций на сифилис (в част-ности, НТТ) ввиду конкуренции антител с разной валентностью за сайты связывания с антигеном; при этом может наблюдаться блокада антигенных детер-минант и парадоксально отрицательный результат реакции [30][31][32][33][34][35]. Выходом из данной ситуации яв-ляется разведение сыворотки крови и ее повторное тестирование в разведениях (титры).…”
Section: клиническая дерматология и венерология 1 2016unclassified