The normal PSA levels for men, who do not have prostate cancer or any other prostate-related conditions, vary with age — generally, the older the age, the higher the normal range of PSA. This normal PSA range is not a single value but rather spans from a lower to an upper limit. Additionally, these ranges are not specific to an individual age but are grouped by decade. For example, the normal PSA range for men aged 40-49 years is 0 to 2.5 ng/mL, for those 50-59 years old it is 0 to 3.5 ng/mL, for 60-69 years old the range is 0 to 4.5 ng/mL, and for men aged 70-79 years, it's 0 to 6.5 ng/mL. The term 'ng/mL' in the context of normal PSA levels refers to 'nanograms per milliliter' in serum or plasma, with serum being the more commonly used medium. A nanogram is one thousand-millionth of a gram. An increase in PSA levels above the upper limit of the normal range for one's age group does not automatically indicate prostate cancer. Rather, it signals that there may b
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