My understanding was more along the lines that once you pierce the rubber you’ve created an opening that bacteria could make it’s way into even if you’re using alcohol before each pierce. Obviously this is meant to err on the side of caution. It’s a general rule for all multi use injection vials, usually 28-30 days be it insulin, flu vaccine, or hrt.
It's mainly this as well as possible measure of medication stability (i.e. the mean tested average they've obtained when the med might be losing its effectiveness).
My understanding was more along the lines that once you pierce the rubber you’ve created an opening that bacteria could make it’s way into even if you’re using alcohol before each pierce. Obviously this is meant to err on the side of caution. It’s a general rule for all multi use injection vials, usually 28-30 days be it insulin, flu vaccine, or hrt.
It's mainly this as well as possible measure of medication stability (i.e. the mean tested average they've obtained when the med might be losing its effectiveness).