Any test you take will be conclusive, and negative, as you had NO RISK for HIV.
As an adult, the only risks for HIV are:
1) having unprotected, penetrative vaginal or anal sex, or
2) sharing IV drug needles with other IV drug users.
If you don't do either of those activities, you will NEVER have to worry about HIV. Nothing else you can think of, including the event you described, is a risk for HIV. You had zero risk, so of course your test is conclusive.