I had conducted a HIV 1&2 Anitibody Test at 2 months, 3 months and 6 months mark from the possible exposure. All results are came back negetive. But there are different variations in Index Value. This means negetive is going to positive. What is index value means. Can we predict the possibility to possitive when we see the index value numarics. In my 2 months test the index value was 0.02, at 3 months test the index value was 0.06, but at 6 months test the index value is 0.11. The value number is going up. What is it meant. Negative is going to positive. I am very much worried about this index value in my negetive report.