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The PSA test is a blood test used primarily to screen for prostate cancer.The test measures the amount of prostate-specific antigen (PSA) in your blood. PSA is a protein produced by both cancerous and noncancerous tissue in the prostate, a small gland that sits below a man's bladder.

The free PSA chart:  

Age (Years) PSA Upper Limit (ng/mL)
<40 < or =2.0
40-49 < or =2.5
50-59 < or =3.5
60-69< or =4.5
70-79 < or =6.5
> or =80  < or =7.2


Higher than normal levels can have many different causes. Higher levels of PSA can be found in the blood as prostate cancer cells begin to proliferate in an uncontrolled way. PSA can also rise for benign, non-cancerous conditions such as enlarged prostate, prostate inflammation, infection, or trauma.

PSA is a protein enzyme produced in the prostate gland and released in to the blood stream. After blood work analysis, the resulting PSA score shows how much of the enzyme you’re producing, and your probability of being diagnosed with prostate cancer.

PSA Level Risk Analysis

15% of men with a PSA level less than 4 ng/ml go on to develop prostate cancer.

31% of men with PSA levels between 4 – 10 ng/ml have shown to develop prostate cancer.

50% – 65% of men with psa scores over 10 ng/ml develop prostate cancer.

Elevated PSA Ranges – Prostate Cancer Test

Normal PSA Levels: 0-4 ng/ml

Slightly Elevated PSA: 4-10 ng/ml

Moderately Elevated PSA: 10-20 ng/ml

Highly Elevated PSA: 20+ ng/ml

The amount of PSA in your blood test may increase with other prostate conditions. However, even though your results may be high, it doesn’t necessarily mean you have prostate cancer. It just means a greater risk of developing it.