Other than running a test, how can you tell if you are fast or slow phase on liver detox? I am reading that most of us are probably fast stage 1, which creates those nasty intermediates, and slow stage 2 which means we can't clear them as fast as being created. This makes sense, but I am caffeine sensitive (could be explained by COMT++ status, I suppose) and that can be explained by a slow stage one. I also have a few CPY 450 snps which also indicate slow phase 1? Thank you for any insights.