PSA test is the
abbreviation for the prostate-specific antigen test
and is a measurement of the serum prostate-specific
antigen level. The prostate-specific antigen test is
able to measure the enzyme because normally leaks into
the blood stream in measurable amounts. A high PSA density
or a rising PSA level in the blood sample may be indicative
of prostate cancer which is associated with higher levels
of serum PSA produced by the enlarged prostate gland.
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