it does. i was rvr at week 4 and just took my 12 week eot viral test. and am more nervous and streesed out nw, than when i was on treatment.
I just posted this a minute ago:
"A Follow-up Week 12 Viral Count Is Useful in Predicting SVR and Is 100% Accurate in Patients without Cirrhosis"
http://www.hivandhepatitis.com/2007icr/ddw/docs/060107_a.html
For stage fours, I think it may be 90% accurate but not sure.
Hope this helps.
Susan