KLK3 and cancer: TMs - tumour markers. TEa - total allowable error. AFP - alpha-fetoprotein. CEA - carcinoembryonic antigen. PSA - total prostate specific antigen. CA125 - cancer antigen 125. CA15-3 - cancer antigen 15-3. CA19-9 – cancer antigen 19-9. *Performance according to biological variation.