A full blood work up, check for vitamins and nutrient deficits. I am not sure how but possibly check the heart as a lot of damage can occur to that organ as a result. Maybe other function tests on other organs, have you had liver and or kidney function tests with your meds MM? Bone density tests can be done, osteoporosis is a common result of prolonged anorexia.

When I was seeing my dr and dietician they did a lot of blood work up's and checked all my nutrients for deficits. Other than that they went by symptoms reported.

I hope that helps a little. It might be different in the states since we have a different health system.