IV starts in radiology

I think it's considered a medication, as you say, and techs would not be allowed to use it.
Those who start IVs should obtain *official* IV certification, of course.
IV certification is conferred upon those who have taken the requisite course of study to establish an intravenous access.

Just an FYI Infusion nurses Society still does not advocate the use of intradermal lidocaine for routine IV therapy. It does make the vein wall a bit tougher and more difficult to access and does require another injection that burns. IN California I must be certified to opt to use it. It is in a standardized procedure and I take an annual competency test to assure competency and yes only RNs can perform this b/c it requires a dose selection. Standardized procedures are gray areas where there is an overlap between nursing and medicine. What state are you in b/c your RN board will have a statement on the issue and what is required...you may be able to get around it if in your location techs can administer and secondly an order is written each and every time including the dosage. IN Ca I can give it when I see fit and can select my dosage within a range b/c of the certification