Not enough info, Answerprancer, but there are tests. Of course, it's possible to have perfect pitch without actually knowing the names of the notes, but I've no idea how you would test for it under those circumstances.
The problem with some tests is that, once you get going, you can usually guess the notes correctly if you have good relative pitch. The ultimate test is to call out the names of notes, and get him to sing them.
If he knows (or is willing to learn) the names of the notes, then there is a test here, but the best way to run it is for someone else to operate the computer and record the results without giving him any feedback.
http://tonedear.com/ear-training/absolute-perfect-pitch-test