"But what they are really seeing is globs of oil, juice and other materials — not the remnants of gallstones."
If this was true, you would be getting roughly the same kind of stuff coming out each time u do the liver flush...
each of my first 16 flushes produced DIFFERENT sort of gunk including LOTS OF PARASITES!! (green leaf shaped ones and even some HUGE WHITE ones with legs!!) a coupla times i also got a green stone as big as a golf ball!! also got out some very BLACK stones as well...
anyway i'm onto my 17th, 18th flushes, and they have both come up EMPTY. NO MORE GREEN STONES. :-) no more leaves... nothing!!! ABSOLUTELY NADA!! ask them to explain THAT!! :P !!!