On October 25, Howard wrote:

(snip)

One robin does not make a spring. One PSA test does not make a trend,
and the trend is what's informative..

Bear in mind that tests in the lower range of detectability can wander
around a bit; anecdotally, mine did.

The "<" also disappeared from my reports. I did not worry about it, as
we're considering one one-hundredth of a millionth of a gram. Depending
upon the state of the chemicals used, the calibration of the machine,
the operator's calibration ;-) and so on, small variations are to be
expected.

Relax.

Regards,

Steve J

Yes, I would be concerned. It does raise a flag. If your uncomfortable
with the results then do another test. Your next 3 or 6 months
scheduled test may show if there is another rise etc and if there is
you can make a treatment decision. I am hoping for you that it is a
glitch with the test and I would be the first to tell you that it can
happen. They had me at 0.3 on one test when it actually was <0.01 after
I did another test a week later.