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What are Normal PSA Levels? (with pictures) - wisegeek.com
Normal PSA levels are 4 nanograms per milliliter (ng/mL) or lower. A measurement of PSA is generally considered one of the most effective tests for the presence of prostate cancer. PSA is found in a number of body fluids, but the most important PSA level for a prostate test is in the blood, which is called serum PSA.
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