I fully appreciate that many vets might feel comfortable with performing a blood draw without clipping as they don't feel there is a significant infection risk - however in 7 years nursing in both general and emergency practice I've met few pets that flip out at clippers to such a huge degree that it would make us not clip. So I guess I don't see adversion to clippers as a reason not to clip.
I guess I personally feel that dog/cat skin is not like human skin - they don't shower every day, it isn't as clean. The only way I can clean their skin sufficiently to feel ok with sticking a needle in their vein - bypassing many of their lines of defense - is by clipping the hair off it so I can cleanse the skin sufficiently. I'm not saying I've never drawn blood from a healthy animal without clipping, just in a patient that I feel in any way compromised I don't feel comfortable with it. Many of the other factors - compromise due to clipper rash - can be controlled by good clipper maintainence and use. If other people feel comfortable with not clipping, I guess thats good for them. I don't want anyone else reading these boards to think that NO ONE clips for venepucture when in my fairly extensive experience, many do.
FWIW, in our really critical patients, we will clip and prep areas for subcut/im injections if we need to - but we try to avoid medications via these routes in really ill animals. But in the EMCC place im at, we are a bit anal about these things
I certainly don't think anyone here has had multiple patients keel over with sepsis - I think people would change their protocols if they did haha! I'm just starting to think more and more about the little things and how I would like to do them when I graduate.