The short answer is that Sofosbuvir has a half life of about one day (27hrs) so the approximate concentration in your body halves each day once you have finished treatment. Eg.
Day 1. 50%
Day 2. 25%
Day 3. 12%
Day 4. 6%
Day 5. 3%
Day 6. < 2%
Day 7. < 1%
Daclatasvir's half life is 12-15hrs so will clear from your body twice as fast so both these meds are mostly gone from our bodies very quickly. Here is a more detailed explanation from Dr Freeman on how long it takes before Sof/Led are completely gone.
Wow, thanks Gaj! I knew someone on here would come up with the answer. I'm so impressed with the entire generic Hep C meds community. There's always someone, somewhere willing to give their time to answer my questions. I've had far more support than the NHS were willing to give me. Funny that, when it was them who infected me in the first place.
Infected 1981 by contaminated blood products
Interferon/Ribavirin 2009 relapsed after EOT
Generic Sof/Dac started 28 Jan 2017
Baseline VL 24.7 million
UNDETECTED after 26 days.