I have to be honest with you.... post of 84 is high to me, and I just wouldn't feel comfortable not taking 'any steps' to aid her liver function.
Roxy has had about 5 BATs in the last year. Her first was 100.9 and the last was 85 (her lowest post # was about 62)
I feed her a home made low protein diet that I got from a Nutritionist, and I give her supplements and I am monitoring her yearly now with BAT and bloodwork. (this past yr was crazy with all sorts of testing, etc.)
If you go and join the Yahoo Group they can truly give you some guidance on what direction to go with food and supplements