Biomarker Biochemical characteristic Type Sample Reference
PSA* Kallikrein-related peptidase 3 Secreted serine protease Screening/ Diagnostic Blood [14,72]
PSA density,Velocity,doubling time Kinetic characterization of PSA Diagnostic/prognostic/predictor of recurrence? Blood [21,22]
fPSA*, tPSA
,-2pro-PSA*
Isoforms and cleavage forms of PSA Diagnostic with better diagnostic performance Blood [29,30]
Phi* Score formula = [-2]proPSA/free PSA) × √PSA Diagnostic Blood [33,34]
PCA3* Non coding mRNA, highly up-regulated in PCa Diagnostic (indicator for repeat biopsy) Urine /tissue [41,73]
uPA, uPAR Precursor for serine protease  and its receptor for degradation of extra cellular matrix Prognostic (increased uPA and uPAR
in PCa patients with bone metastasis)
Tissue/blood [47,57]
PSCA Membrane glycoprotein. Specific production in the prostate and possible target for therapy
Prognostic
Prognostic (correlated with higher Gleason score, higher stage,
and the presence of metastasis)
Tissue / blood [62,74]
*FDA approved
Table 2: Some conventional and promising PCa biomarkers.