Pku results?

La

Our son will be 3 weeks tomorrow and I’m terrified we’re going to find out something is wrong with him. I lost my first born at 28 weeks due to Bladder Outlet Obstruction—a very rare disorder. I had two missed calls from the pediatric business department where my son was born and now I’m terrified they’re calling to say he’s positive for pku. Pediatrician hasn’t mentioned results.