Hi Jun,

     I hope all gets better with your daughter! I have actually been told by the doctor  that the stress from them getting blood should not be enough to make potassium high.

      Something you might should take into concideration. Has she been in the heat and sweating? If so then you would need to add more salt. 

     How old  is your child? And how much salt do you put in her bottle on a reg. basis and how often?

April