Certain, type specific IgG tests, such as HerpeSelect can distnguish between HSV-1 and HSV-2. However, other tests (such as IgM) do not. Most herpes tests have a numerical value that are "cut-off" points to differentiate between positive and negative results. For example, with the HerpeSelect test, any numerical value under .9 is considered negative. You should find out the specific test you had, just to make sure it is type specific, IgG.