please i am worried doctor...

i  know that sometimes it takes years before an HIV+ person can show symptoms. And that it is possible to get a false negative test early after having contracted HIV. My questions is if somebody is showing symptoms early after possibly contracting HIV (within 3 months) and they test are negative even after 5 months , what are the chances that they are actually positive? Is it possible to get a false negative while showing symptoms uptill 6 months? Or if somebody is positive, and showing symptoms will they test positive or negative?? and what is the deffrent between *elisa* and *axcym*, *hiv duo*, *axsym*,elecsys-ecl?? which of this test is realiable please??

[Teak]

You know something, it doesn't take years to get banned from the forum. Keep it up and you'll see.