False positives are more likely for HSV 2 than HSV 1. The majority of people who test at a number greater than 3 for HSV 1 will confirm with the western blot. That is not necessarily true for HSV 2.
The western blot is done only at the University of Washington. You would need to call them to order a test kit at 206-685-6066 and then find a lab that can draw your blood (we often use anylabtestnow or ARC point labs), and then you need a provider to place the order for the test and then the sample needs to be shipped back to UW.