Is Insti the most reliable point of care test in the market?

[operspecial]

A recent medical article stated that the Insti Rapid HIV test can detect the virus nearly 9 days earlier than the Western Blot laboratory test.  Furthermore, the test performed rather well against other laboratory based HIV tests.  This is due largely to Insti's ability to detect HIV gp41 antibodies, which are produced during early infection.  With that said, how accurate is an Insti rapid test at 6.5 weeks after unprotected vaginal sex with a female of unknown status?  This test followed a 4 week Clearview Complete Pack test.  

I understand that a 3 month testing window is still the guideline for antibody testing.  In all reality, however, what are the odds that a person that test negative with a highly accurate (best test in the market) at 6.5 weeks will test positive at the 3 month mark?  Experts in the field such as Dr. Hansfield and Dr. Hook state that any test at 6 weeks is nearly conclusive and one at 8 weeks is most certainly.  They've also stated (as well as general MDs) that they've never seen a 6 week negative test turn positive if no unsafe act was performed in the time elapsed.   Can this HIV scare be put to bed?  Any advice would help.  Thank you.

[operspecial]

Vance, I have attached the link to the study that was published in the Journal of Clinical Virology.

http://www.journalofclinicalvirology.com/article/S1386-6532(15)00640-X/fulltext

These are the highlights:

•The early sensitivity of INSTI is due to detection of HIV-1 IgM. This was shown by:
•Providing evidence that INSTI gp41 antigen binds to HIV-1 IgM using HIV-IgM ELISA.
•Providing evidence that INSTI protein-A based colour developer binds to human IgM.
•Providing evidence that INSTI can detect anti-HIV IgM in early seroconversion samples.

[Vance2335]

I have no read that about that test so all I can say is 6-8 week test is unlikely to change.