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What are normal PSA levels by age?

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Normal prostate-specific antigen levels go up to 2.5 nanograms per milliliter for ages 40 to 49, 4.0 nanograms per milliliter for 50 to 59, 4.5 nanograms per milliliter for 60 to 69 and 6.5 nanograms per milliliter for 70 to 79, according to MedicineNet. These figures vary by race.

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PSA levels in Asian Americans go from zero to 2.0 nanograms per milliliter of blood from ages 40 to 49. The same ethnicity has zero to 3.0 nanograms per milliliter for 50 to 59, zero to 4.0 nanograms per milliliter for ages 60 to 69. The upper age limit range is zero to 5.0 nanograms per milliliter for Asian Americans ages 70 to 79, notes MedicineNet.

The PSA range for African Americans goes from zero to 2.0 nanograms per milliliter of blood for ages 40 to 49. The normal level goes up to 4.0 nanograms per milliliter for ages 50 to 59, and then 4.5 nanograms per milliliter for ages 60 to 69, according to MedicineNet. The highest normal limit is 5.5 nanograms per milliliter of blood for ages 70 to 79.

Caucasians start at normal PSA levels of zero to 2.5 nanograms per milliliter of blood for ages 40 to 49. The range goes from zero to 3.5 nanograms per milliliter from ages 50 to 59, and then zero to 4.5 nanograms per milliliter from 60 to 69. The final, normal range for Caucasians goes from zero to 6.5 nanograms per milliliter for ages 70 to 79, explains MedicineNet.

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