i dont really remember properly whether my syringe was changed during d last blood test probably more dan a year ago... i had 3 hiv tests since then at every regular interval of 3 months... last test done by me was on february last and it came negative.. so should i take it as a conclusive one? i am a little confused that is hiv detected within 1 year? is there any possibility of getting positive result in d future if i test again?