Labs

Hi, I'm new to the NICU. I work in a Level 4 NICU. I have had a great orientation, but I am struggling with labs. I oriented and work strictly day shift so I missed out on a lot of lab opportunities during orientation. I'm looking for knowledge on when to do a heel stick vs. Venous vs. Art stick. As well as all the tips and tricks you have! 
 

Ps. we use EPIC, which is great about telling what container and how much blood I need to get.