You are correct. There is an 85% chance that your result is a false positive.
Developing an antibody test is tricky – you want to have the cut off low enough that you capture all the infected people but high enough that you don’t have false positives. This test is a good test, but these false positive results can be devastating for people. In our hands (and we do this test in our office), 5.5% of people who test with the herpeselect ELISA test in the low positive range (1.1 to 3.5), which means that generally, the test is very accurate for HSV 2 in particular, in terms of false positives. But in my mind,, the thing that needs to happen is that these low positives need confirmation routinely, and honestly, there is no routine confirmatory test at this point that is easy, readily available and reliable. THAT is the problem. The best confirmatory test is herpes western blot but it is done only at the University of Washington and must be read by three experienced readers. that is not automated.
Your value needs a western blot confirmation. Our clinic can order that for you is you want us to help. It is not readily available otherwise.