A blood test may be done to check the level of prostate specific antigen (PSA). PSA is usually found in the blood in larger amounts when prostate cancer is present. A high level of PSA does not mean you have prostate cancer but you will have a biopsy to know for certain. It is very common for BPH to cause a high level of PSA.
Prostate-specific antigen (PSA) is a glycoprotein in the cytoplasm of prostatic epithelial cells. It can be detected in the blood of all adult men. The PSA level is increased in men with prostate cancer but can also be increased somewhat in other disorders of the prostate.
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