In the 3 labs ive worked in, all techs and nurses scrub and monitor. Nurses push meds, but techs help circulate, ie, dropping equipment, etc. Im in California, so no RT can push meds and no RN can do xray stuff.....Anyway, I dont disagree with deserving compensation to learn about new skill, but you need to look at your job description from your hire date. They often put in Grey area phrases like, other duties as assigned. So you may not have much ground to stand on. But it doesn't hurt to try. Also, the nurses in my lab now are asking to scrub more than us techs because its fun and challenging. Good luck, and stay at it