My husband has had continual rises in his PSA levels from 6.8 the latest being 12, he’s already had a biopsy 18 months ago and they said it’s all fine, but when he’s had the rides after that they’ve said it’s nothing to worry about but now it’s 12 should we be worried and what should happen now it’s this high all of his brothers have had prostate cancer and two having there prostrate removed.