What is the certification level for a vet tech?

Certification or other credentialing required to work as a veterinary technician in the US varies from state to state because each state writes it's own laws governing veterinary medicine. Some states require credentialing to work as a veterinary technician while others don't but do have voluntary credentialing and still others don't have any requirements or voluntary credentialing at all. To find out the requirements of a specific state, you would need to research the statutes of that state governing veterinary medicine (often called the "veterinary practice act") or contact your state veterinary technician association or credentialing board.