I recently got the results of stool testing and had a high amount of fecal fat, so I'm not absorbing fat correctly. My gallbladder, pancreas, and liver are all fine. I haven't had lactose in 3 years. Don't know if it's intestinal damage or what. I'm currently looking into this, too. It's such a slow process getting the appointment, doing the test, waiting for results, etc.
I did find this article.