In the beginning my daughter had her electrolytes drawn all the time.  I am not sure when we switched..maybe once her electrolytes started to come back normal(?)  Now every 2  months we test her Renin, 17 OHP & one other...oh I am have a brain freeze!  Can’t remember what!  Anyways, I do know that in the beginning it was always her electrolytes b/c those would be drawn in the AM & the results would be back from the local lab that day.  The other labs take a bit to get back, so adjustments can’t be made as quickly.

Jess