How long can centrifuged human serum be stored at 4 C before being frozen at -80C? labrats

We've had a protocol of storing serum in a refrigerator for a week at a time before it can be frozen at -80C. I'm wondering if this amount if time is resulting in significant degradation of the samples?

Submitted April 21, 2016 at 01:13AM by Kriztauf http://ift.tt/1QnXx99 labrats