Among other things, Dr. Hook advised that an HIV antigen-antibody test (AgAb, i.e. 4th generation) after 6 weeks would be conclusive. That remains the case -- you can trust the test for sure. From the nature of your exposure and earlier test results -- the low chance your partner had HIV and the reliability of your earlier tests -- I would judge the probability you had HIV to be well under one chance in a million, before this test result. Where this test was done makes no difference -- most countries use exactly the same tests, which are so standardized that just about any lab produces reliable results, and thus the same window period. And of course from a medical care standpoint, New Zealand is a highly sophisticated country.

For those reasons, you definitely can rely on your negative result. No more testing is necessary.

I hope these comments are helpful. Let me know if anything isn't clear.

HHH, MD

Thanks for the thanks--  I'm glad to have helped.