I am not a medical expert or professional but can pass on my experience.

Did you have your prostate removed?

If you had your prostate removed your PSA should be at the non detectable level. Many labs have different non detectable numbers so don't want to give one.

If you had your prostate removed they would be checking to see if your PSA is rising above non detectable. That would indicate to whom ever is testing that need to do additional testing.

If you are saying you have PSA then is it at non detectable number?

When you say you had "it removed" are you saying your prostate was removed or just the cancerous area or tumor? If you still have your prostate you are going to have PSA above non detectable numbers. That is the norm and not to be concerned with unless it start rising again over and over and then doctors need to find out why?

Sorry could not be more helpful.