<ol>
<li>Samples should be assayed within 7 days when stored at 2-8℃, otherwise samples must be divided up and stored at -20℃ (≤1 month) or -80℃ (≤3 months).&nbsp;</li>
<li>Avoid repeated freeze-thaw cycles.&nbsp;</li>
<li>Centrifuge again before assaying to remove any additional precipitates that may appear after storage.</li>
</ol>


Samples should be assayed within 7 days when stored at 2-8℃, otherwise samples must be divided up and stored at -20℃ (≤1 month) or -80℃ (≤3 months). 
Avoid repeated freeze-thaw cycles. 
Centrifuge again before assaying to remove any additional precipitates that may appear after storage.

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