I didn't have any tests but saw a lot of sludge coming out with the liver flush. More Liver Flushes did bring out more sludge but did not clear away the congestion. Some of it had solified so wouldn't break up so it could come out. An ND gave me a supplement, Cell Power, which I took for a while but stopped because it made me feel so ill but the next Liver Flush went easier so I would use the Cell Power for a few days then do a liver flush. I think that I had an overgrowth of bacteria and yeasts in the bile system and later I did parasite herbs followed by Liver Flushes and got out tapeworms, other worms, flukes. If Telman does not add to this information write him a message.
I also used increased fiber in my diet - I read that this might help with sludge and restoring the bile pool.