Questions: <If I have sample taken when horse is under <no
physical/situational/environmental stress, and some of these <numbers are
close to the "edge" of normal range, would any <stress such as conditioning
or hauling or whatever, be likely <to send them outside normal
range?
I would urge you to go back to the vet, get more
test done and find out what the problem is before starting conditioning and
endurance rides, because stress is only going to make it worse. If your
horse is 'borderline' now, it's not going to get better under stress. Even
trailing can cause stress. I've know people who had horses that tied up just
from being in the trailer.