
Keywords: %fPSA; ratio of fPSA to tPSA (in percent) also known as f/tPSA ratio or percent free PSA; %[â 2]proPSA; percentage of [-2]proPSA to fPSA; A2M; alpha2-macroglobulin; ACT; alpha-1-antichymotrypsin; ANN; artificial neural network; API; alpha1-protease inh