111 (71.6%) discordant sera among 155 CLIA positive samples were negative by confirmatory TPHA test
in the reverse algorithm.
Concurrently, the mother had a positive VDRL titer of 1: 16 and a positive TPHA test
. Given these findings, a diagnosis of congenital syphilis was made.
At the third month, the TPHA test
was negative and VDRL test was regressed to 1/8 titer from 1/64.
as a simple alternative specific treponemal test suitable for laboratories.
The goal of this study was to compare two commercially available total antibody treponemal assays: a conventional TPHA test
with an automated CIA run on the random access Siemens Immulite[R] 2000 analyzer.
All these nine subjects were also found to be positive when tested with TPHA test
The TPHA test
detects antibodies against a specific treponemal antigen.
pallidum antibodies were tested by TPHA test
(Immutrep TPHA, Omega Diagnostics Ltd., Scotland, UK) following manufacturer's instructions.
The RPR test was positive in 5.2% of the women, and 7.1% had a positive TPHA test
. Active syphilis was found in 4.7%.
A TPHA test
was performed in every case to rule out cross-reacting antibodies to Treponema pallidum.
The aims of this study were to determine and compare the prevalence of syphilis among different patient groups at Weskoppies Hospital, to determine and compare the psychiatric diagnoses of the infected and non-infected, to assess self-reported high-risk sexual behaviour, to establish the co-morbidity between syphilis and HIV, and to investigate the performance of the non-treponemal RPR test as screening method, compared with the confirmatory TPHA test