Frolic is a playful word with a happy history. It traces back to the Dutch word vroolijk (merry), which in turn evolved from a Middle Dutch combination of vro (happy) and the adjectival suffix -lijc (-ly).
A normal PSA level is considered to be 4.0 ng/mL (nanograms per milliliter of blood). 1  For men in their 50s or younger, a PSA level should be below 2.5 in most cases.  Older men often have slightly higher PSA levels than younger men.
A. In general, a PSA level of 2.3 ng/ml is a normal and good PSA reading for an 80 year old man. Some studies have suggested that if a man lives to 70-75 years and still has a PSA reading less than 3.0 ng/ml then no further testing is needed during his lifetime since his risk for serious prostate cancer is very low.