I picked up my test results from the clinic today.
Phosphorus is still too low, potassium needs significant improvement, and kidney function has slipped again. In better news, after heavy supplementation (over 150,000 IU a week), my Vitamin D is finally in low-normal range for the first time in my adult life.
I will continue all scripts, my K+ dosage has been increased again and is now 200mEq a day, and I will have to keep searching for any possible way to bring phosphorus back into normal range.
I have a CT and Barium swallow test at the crack of dawn Wednesday.