Probably time this moved to a national screening programme
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Sadly we’d need a much better test than the current PSA test for this to be a good idea.
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I had to practically insist on getting a PSA test from our GP. She was totally against the idea due to false positives etc. I was 52. Thankfully came back normal.
As has been alluded to above, the PSA test is not without issues. It’s possible to have PC with a ‘normal’ result and have an ‘abnormal’ result and not have it.
Loads of things can elevate it including sex, cycling, urine infections, enlarged prostate etc. It’s not perfect. Mine fluctuates quite a bit up and down.
But… it’s a good general indicator and a single PSA test is never going to be used in isolation for a diagnosis. If you get a high PSA, repeat PSA tests, DRE (the finger), MRI and biopsy are all available to confirm (or hopefully not) any problems.