PSA - Prostate Cancer Marker

Prostate-specific antigen (PSA) is a protein made by cells in the prostate gland (both normal cells and cancer cells). PSA is mostly found in semen, but a small amount is also found in blood.

Symptoms of Prostate Cancer

  • Needing to pee more frequently, often during the night
  • Needing to rush to the toilet
  • Difficulty in starting to pee
  • Straining or taking a long time while peeing
  • Weak flow
  • Feeling that your bladder has not emptied fully
  • Blood in urine
  • Blood in semen


The normal ranges: 
0 - 49: < 2.50 ug/L
50 - 59: < 3.50 ug/L
60 - 69: < 4.50 ug/L
>70: < 6.50 ug/L

*Normal value ranges may vary slightly among different labs. Some labs use different measurements or may test different specimens. Talk to your provider about your test results.