I'm wondering if you looked very hard for this "data". Did you even read Andreas Moritz' book? Or look through the recommended messages on the forum? You are coming at this from a very basic angle of skepticism that has been addressed hundreds of times.
The OP asked if he/she should liver flush now or do something first, not if it was effective or "scientific".
Observation is the beginning of science, observe the images of what has come out after flush.
Yes, people have had x-rays before and after the flush showing them removed. Give the people who "believe" in the flush a little credit. If you are waiting around for the establishment to "prove" the LF is effective, you'll be waiting a long time. We want to get healthy and live now.