A few questions about syphilis testing

[Jason4399]

Hi,
My first exposure happened in  April 2015,and the othet exposure was in December 2015.I went for test for Rpr and tppa in January 2016, 37days after the last exposure. After that, I was still worried about it so I got test in early June 2016,tpha alone , negative.
Here's my questions.
1.I saw views that tppa(tpha) test alone cannot completely exclude the infection, but I saw many studys say they are nearly 100% accurate 3 months after exposure, which should I trust?

2. Are my test results conclusive? Especially the tpha test in June.

3.Do I need further tests?

Thank you.

[Mknee]

That's what I come to believe after 3 months a Syphilis test is accurate.

Did you definitely come into contact with Syphilis twice and be negative?

[Jason4399]

Thank you for your reply.
I am not sure about it but I just assume the girl does have as it happened in a country with high prevalence of syp.
May I ask when you say “test after 3 months”

[Jason4399]

are you refering to one single test or combined tests?which is basically I want to know through this post.
Thank you.

[Jason4399]

By doing furthur reading, I found out that TPHA test conducted 3 months after potential exposure are said to have 100% frequency of reactive result in untreated syphillis , and a negative result can "virtually" exclude the diagnosis of syphilis.
I found this in one Microbiology textbook, so I think one single TPHA test 3 months after potential exposure is enough to exclude it,and no furthur tests are required.
Please correct me if I am wrong.
Thank you.