I am not sure what are you trying to explain here;
If you didn't have unprotected vaginal intercourse or insert your penis in to a vagina with out using a condom, you do not have to worry about HIV. In that case, a test at any point of time will provide you with a definitive result since there was no risk associated.
If you had an unprotected vaginal exposure, a negative result with an antibody test at 10 months means no infection, the result is conclusive. No further testing is recommended.
Simple inquiry: Are all antibody analyses be conclusive after 10 weeks, or are they limited to the type of analyses, and whether they are conclusive regardless of the symptoms like joint pain ??