We do not indicate an exact expiry date because these sera are very stable over time thanks to their freeze-dried form.

You may consider that they may be kept for up to 10 years from the production date (indicated in the upper right-hand corner of the product sheet). Store freeze-dried at +2° – 26°C.

For information regarding storage in the reconstituted (liquid) form, please refer to the product sheet. 

In general, liquid sera should be stored as follows:

• Store at -20°C in aliquots after reconstitution.
• Never freeze/thaw more than 3 times.
• If reconstituted, store +4°C for up to 2 days.

Once reconstituted, the sera should be aliquoted and stored in air-tight vials (preferably with a joint, such as a cryotube). Otherwise, auto-lyophilisation may occur after 6-12 months at -20°C.