Dear Doctor, I previously asked about syphilis testing. You mentioned that a syphilis test can be considered conclusive at 6 weeks, but my current doctor says it’s only conclusive after 12 weeks. Could you please clarify the following:. What is the sensitivity of the test at 6 weeks — is it above 99,9%, or how should “conclusive” be understood? Are any specific test types more reliable or accurate than others after 6 weeks? Seems like there are different opinions on this? Thank you very much for your time and clarification.