Dallas is Area Code 214. I wonder if they appreciate that 214 really represents the 3 types of RTA in anatomic order?— Joel Topf (@kidney_boy) January 7, 2014 This morning I was trying to imagine the mad electrolyte gurus of UT Southwestern in Dallas influencing the naming of the RTAs to match their Area code. … Continue reading Area Codes, RTAs, and Amphetamine. This is what Twitter is like.