What is the risk of oral herpes if I accidently use a spoon or utensils that someone used and i know they get cold sores

The risk is so very very small - probably one in a million.  If I was in that situation, I wouldn't give this a second thought. ---

Thanks as i was worried as I know people i am around get cold sores. So not to worry about the use of spoon or utensil then. Should I be concerned about towels or anything else 

We recommend that people use their own towels.  Towels can stay warm and moist for a while and those are conditions that herpes likes.  We don't know of any cases of herpes being transmitted via towels, but  to be extra careful, probably way too careful, we recommend that people don't share towels.  Does that makes sense?---

Makes sense. In terms of utensils or surfaces nothing to worry about? I can avoid using the same towels to be extra safe 

I know of no cases of transmission via utensils but I guess I might recommend not sharing a straw with someone with a cold sore?---

Is hsv blood work something recommended 

No, due to the high rate of false positives on this test.  If you develop sores, then have them swab tested but I doubt that you will.---