psa count

According to this site: http://www.cancerhelp.org.uk/help/default.asp?page=2838 "There is no one PSA reading that is considered 'normal'. The reading will vary from man to man and the normal level increases with age. But a value around 4 or less is considered to be in the normal range. A reading higher than 4, but less than 10 is usually due to a benign enlarged prostate. A reading higher than 10 may also just be benign prostate disease, but the higher the level of PSA, the more likely it is to be cancer. Occasionally a cancer may be diagnosed in a man with a PSA reading of less than 4. But generally speaking the higher the reading, the more likely it is to be cancer."