Generally, bioware goes bad QUICKLY. Even in refrigerated conditions, the lifespan from donor to receiver is measured in hours, not days. Like, the sturdiest organ, kidneys, have a little under 48 hours to go from "Removed from living host" to "Successfully installed in receiver" … transport is in there, but alo medical prep, the actual procedure, time to adjust, etc.
As a rule of thumb? You have 24 hours from cut to cut, assuming you keep the implant properly stored for that entire time.
There's a reason that "Walking body banks" are a thing in the 6th world, where a group (Like Tannamous) keeps files on people and, when a request comes in, they go fetch the organ, rather than just keeping slabs in freezers. As long as the organ's hooked up to a working body, it'll be there when you need it.
Trying to get the part first, then find a way to store it, THEN find a doctor that can squeeze you in and do the job AND that won't ask questions? Yikes.