Hi Seedy,
After rereading your various posts it sounds like the twelve week test may be when you recently finished treatment (took the last of your pills) rather than 12 weeks after finishing treatment? If so a viral load test result of undetected (0) at that stage is certainly good news

but it is the tests during the weeks after treatment has finished that really determine likelihood of cure.
I believe Coral is referring to the post that Dr Freeman made (in the link below) regarding viral load testing during the period
after you have finished taking the pills.
fixhepc.com/forum/viral-load-and-svr/151...ween-eot-to-svr.html
The problem can be gaining access to this additional testing in some countries (and of course the cost if you have to pay for the tests yourself). Additional testing at 4 weeks, 12 weeks and 24 weeks is ideal and will give confidence that you have been cured particularly the 24 week after test.
If this option is
not available for whatever reason(s) then please read the below quote from the link.
"If you can't get/can't afford to do a viral load testing ALT level is a very good indicator. If it is no more than 20% higher than on treatment you are fine. If it has risen by 100% that is a worry, so 10->12, 20->24, 40->48 is nothing to worry about, but 10->20 or 20->40, or 40->80 is."