PSA test losing value, study says

March 10, 2008 2:07:41 PM PDT
Changes in medical practice have undermined the value of the Prostate Specific Antigen test as a diagnostic tool for prostate cancer, according to a new study in the journal Cancer.

Suggested screenings for prostate cancer usually involve a digital rectal exam and a blood test for PSA.

This new study finds for men with a normal digital rectal exam the PSA test has lost the predictive accuracy it had in the 1990s.

Scientists say exact PSA readings matter less because doctors are doing more biopsies now and are using improved biopsy techniques. However, this assertion has been immediately challenged by other experts in the field.