High potassium in serum can simply be caused from taking the blood draw too fast. Did you have high potassium and high transferrin saturation repeatedly?
It fluctuates. Febr 2018 potassium was a bit too high again; 4,8 mmol/L (3,5 - 4,7).
I didn't took any potassium supps.
High transferrin was there as well 6 months ago. I have this new blood test waiting for me, which I will do next week. My doc adviced me to take food which is high in iron before the test.
This high iron overload is keeping me busy for 2 years now. Everytime I take an iron chelator then I get sick, pressure on the chest and more, and then after 2 days being sick I feel better. I discovered this for the first time when I took Rutin.
I didn't knew that Milk Thistle can act as a iron chelation as well. I didn't had this sick feeling though.