@miprincipe Yes, that is his functioning value of the active kidney. You might want to question his dr if a transplant would be an option at some point. If there was to be a sudden failure of his working kidney, your son would need emergency dialysis, so that is a reality you should be prepared for, which your dr has probably talked to you about.

It is a difficult position to be in, isn't it, when your little one is ill. We want to give them the world, and search for ways to make them better. Having a congenital defect like your son has with his kidneys, creates a challenge to be upbeat all the time, so please remember to take time for yourself. I trust his medical team is following this closely.
Ginger