But there is a dearth of prospective data on the predictive value of PSA levels below this threshold. To analyse the prevalence of prostate cancer in men with a serum PSA level ≤4.0 ng/ml.

Their prospective observational study included 161 men with an elevated serum PSA level (4.1–10.0 ng/ml ... the authors discerned that a cutoff value of >5 leukocytes per high-power field ...

Background: Sarcosine has been investigated as a prostate cancer biomarker with mixed results concerning its predictive ... PSA value (52.2 %) or those with PSA values in the range of 2 to 10 ...