Publisher's Synopsis
Excerpt from Annual Report of the Office of Scientific Director, National Institute on Aging, 1994
Longitudinal Study Branch researchers continue to investigate prostate specific antigen (psa) as a prostate cancer predictor. They found the first documentation that prostate cancer screening criteria based on the rate of change in psa are affected by the testing interval. Also, when comparing psa criteria for prostate cancer protection, the average velocity had the highest combined sensitivity and specificity of all compared criteria. In another study component, it was shown that serum testosterone levels are not a strong risk factor for developing prostate cancer.
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