Labs with different minimun PSA standards

Has been 7 years since prostate cancer surgery at Mayo Clinic in Scottsdale AZ. I was an 4+4 after surgery so had PSA test every 3 months for 5 years. All tests came back < 0.016.

A couple of years ago the hospital and Doctors office lab changed their testing equipment to an < 0.064 standard. I read these forums several times a week and have noticed that an PSA level of 0.030 is mentioned as being cause for watching what is going on. Do I need to find another lab that has the lower standard or continue with the local labs.

Bob S

Gleason was 25 with no cancer detected outside the prostate.

Bob S