Comment by OroPla

Isn't perfect pitch just when you can tell a note without having a reference tone?

Once you have a point of reference things just go up and down and from there it should be manageable to identify each note.

Also, not sure about the innate thing. Seems to me that it's just a neural pathway that can be created by playing or listening to a whole lot of music while being aware of which tone is which, for example by reading the score alongside.