TEST TYPE: non-treponemal (RPR,VDRL). This Indicator is relevant for Tonga however there were NO known ANC clients tested positive for syphilis in 2013. Ministry of Health Surveillance Data 2013. A total of 5529 RPR test for syphilis was conducted in 2013 with no confirmed result. 36% of those RPR tests were for ANC mothers with no positive result. SOURCE: National programme data. Ministry of Health Surveillance Data 2013 (HIV/STIs Program Report 2013)