My husband had a reading of 6 that than went to a 14. The doctor gave him an antibiotic because he thought he might have an infection since developing shingles in fall. This reading of 14 was from a blood test taken February. He had another blood test, for PSA, taken in March. The levels came down to a 10. His doctor now wants him to have another biopsy done. I think he might still have some infection left from the shingles. What do you think?