They are only used in helping diagnosing infants born to infected mothers up to 18 months old.
and teak are also used in the process of testing newly born children to see if they are infected, it is a highly effective test. Also are used on rape victims and blood doners. they are though followed up by others.
PCR tests are monitoring tests for people that are known to be HIV positive and to monitor their HIV progression.
Doctors say that at this time you are virtually assured by a negative result so its a good sign but get a conclusive antibody test after 3 months
PCR tests are not approved diagnostic tests. Don't even bring it up again.