People who are licensed to draw blood or insert an IV needle sho

Villas - People who are licensed to draw blood or insert an IV needle should be suspended and sent back to school for more training if they are not able to successfully insert the needle the first time. A patient should not be badly bruised a week after visiting the emergency room (ER). It is possible to find the right vein the first time. The techs at LabCorp do it every day, thousands of times. Why can't ER and other "qualified" hospital personnel do it?