The PSA ratio, or free-to-total PSA ratio, is a measure that reflects the proportion of free prostate-specific antigen (PSA) to total PSA in the blood. It is calculated by dividing the free PSA (unbound to proteins) by the total PSA (free plus protein-bound), then multiplying by 100 to express it as a percentage. This ratio helps distinguish between benign prostate conditions and prostate cancer, especially in men with moderately elevated total PSA levels.
Testing the PSA ratio can be particularly beneficial for certain men in the context of prostate cancer screening and diagnosis:
Improving your PSA ratio involves addressing factors that can influence both total PSA and free PSA levels. Here are some general strategies that can influence PSA levels:
Several factors can influence your PSA ratio. Understanding these factors is important, as they can affect the interpretation of PSA test results:
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