Is it ok to store these tubes at -20 instead of -80. We have put our tubes in the -20 freezer but they are not freezing. They are going to be used for proteomics at a future date. Am I wasting my time collecting these samples or will they be ok? The protocol I am working to is very vague as to what happens to them down the line.
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Storage of blue-topped transcriptomics blood tubes
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