Hey guys, I'm new to this site but I have read some very helpful answers here so I was hoping you could help clarify a question I have. As far as PICC lines are concerned, I've had very little teaching about this. In a standard triple lumen, what are the differences in each of the ports? Are any of them used for specific things? For example, administering TPN, would it go into a certain lumen or would any of them work? And also, drawing labs or pushing meds, which would be best for this? I was just curious if there was some rule of thumb to help me out. Thanks!