Coming to clinic dialysis from hospital nursing I found out quickly that things can be very different in an outpatient setting - all regulated (or at least tolerated) by the BON*.
According to my large national for-profit company's P&P meds had to be drawn up no more than 4 hours before they were to be given; EPO was to be stored in the refrigerator (I often saw the syringes right on top of the warm machines :icon_roll - but I digress). It was encouraged, though not required, that each nurse give the meds that he/she drew up; later our clinic changed P&P to require that the team leader (usually RN) draw and give all meds.
We had labels for each patient with the drug name (EPO/Zemplar/Venofer; rarely others), dose, date, and a place for the nurse's initials. In a pinch, I would give a colleague's meds (e.g., if their patient was about to come off the machine and they were busy with another and asked me to do so). This was fine according to company P&P, but I do realize that the BON would consider it a poor excuse if anything went wrong.
In a nutshell, you probably need to check the company's med P&P. It should have detailed instructions regarding who/what/how/when etc. But realize that there are some differences from state to state so in case of a national company it may sometimes just state "if allowed by state law".
*There are also other things allowed in this setting in some states that are far scarier than nurses giving meds drawn by other nurses: meds drawn and given (po, IM, even IV!) by UAPs, UAPs accessing central lines and even doing assessments including heart and lung sounds. For an interesting discussion on this subject see the thread "What do your PCTs do?" below.