Although I do not know for certain, I suspect the answer to your question is (1) fpsa is used to help determine whether to do a biopsy; (2) fpsa has not been determined to be reliable where total psa is below 2.5 ng/ml; and (3) with total psa > 10 ng/ml, most docs would suggest a biopsy regardless of fpsa (in which case the fpsa result would not be useful). But I'm no doctor (and I didn't even stay at a Holiday Inn Express...)
Age 46. Father died of p ca.
My psa starting age 40: 1.4, 1.3, 1.43, 1.74, 1.7, 1.5, 1.5