my other thought is dogs digest food much faster than humans as their digestive tract is smaller and why they can tolerate raw based diets so this could be why she does not think it necessary as the food is out of system much faster but again if it were mine i would want to make sure nothing was in that system for 12 hrs prior also many dogs will not eat at vets office and some people are not close to home so getting a dog to eat when they are really hungry may help as that test has to be done post right on the dot at 2hrs or it will be inaccurate |