The testing you had for chlamydia, gonorrhea, and HIV NAAT should all be accurate 8 weeks after the unprotected oral sex. That means you can trust the test results for those STIs and you do not have to repeat them.
With syphilis, test results are usually accurate after 6 weeks, but it can take as long as 3 months to show up in your blood. You may want to go for a follow up syphilis test 3 months after you had the unprotected oral sex.
If you want to know more about how long it takes for a test to become positive (window period), you can check out our chart “STIs at a Glance“.
Please leave a comment to let us know if this answered your question or if you need more info.
For other readers, please feel free to leave a comment, or let us know if this was helpful.