This time, from my primary physician’s office.  The new result is 2.5.  They measured a 2.9 in 2009  and 2.4 in 2008.  All three results are probably within normal daily variations and margins of error.   This is good news, as all indications are that my PSA level is generally stable.  That doesn’t rule out cancer, but it does seem more likely that I simply have a slightly enlarged prostate, either from genetics, infection or BPH.