I LOVE Dr S. I did not get any testing done. Thought it was pointless. I just read her books, the fist one is great, don't bother with the second. She has a third that has just been released. I have ordered it. I will let you know what it's like.
I very my intake of carbs depending on what my needs are. They are usually about 100-150 of complex carbs a day. That does not include vegetables. I started on the healing plan, 15grams, 5x a day...then added more back in after 4 weeks. The first book is amazing. She really knows her stuff.