>You simply clip a nail, collect the blood in a heperanized hemacrit tube
 
I can't believe you said that Anne.  That is EXTREMELY painful for the
ferret and totally unthinkable.  This is NOT the way to get blood from a
ferret.  You know from grooming accidents that it makes a ferret vocalize
in pain, and as stoic as they are that's a horrid experience when they
scream out.
 
Bob
[Posted in FML issue 2917]