I was wondering if even though virus was killed, if there were still remnants that took a while to dissipate that would be measured by the test. As far as how long, the mention in Humble's book says that a lady took one dose of 30 drops and was clear. It's not specified what was used to determine "clear" though. Also, I have read that the viral load tests have an enormous room for inaccuracy. I had a load of 50,000 and then a subsequent check just 3 months later showed 800,000. I don't know that's even possible, but it seems unlikely.