After receiving (AC) chemotherapy, the nurse put Neulasta Onpro on my upper arm. The purpose of Neulasta Onpro is to fight infection after receiving chemotherapy. Neulasta Onpro is scheduled to give you your medication at a specific time. After you have received your medication, the easiest way to remove the device is using baby oil. My Neulasta Onpro came off very easily and painlessly by using a cotton pad soaked in baby oil.
(I do not have a medical background, this post was written based on personal experience.)