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What is a normal PSA level for a 77 year old man?

According to research published on the National Institutes of Health website, men in the 70-79 age range are considered to have a normal PSA level under 6.5 ng/mL. This represents a higher threshold than for younger men, reflecting the natural growth of the prostate with age. Understanding **what is a normal PSA level for a 77 year old man** requires considering age-adjusted ranges and other factors beyond a single number.