Today I got my 45 days child bun test along with pottasium serum ,
creatinine and sodium on doctor advise.
Bun serum is 25
Creatinine serum is 0.55
Sodium serum is 131.56
Pottasium serum is 5.29
Child was on cow milk feed from the past one month due to mother's surgery after c section
She went through laprotomy due to abdominal pus collection
Mother feed is now 2 times a day
Child is completely normal and active
Doctor suggested formula milk and have started also
Kindly suggest is it a very serious condition to worry about.