For providers · 2 min read
The cold chain question, answered before you order
Half the operational problems in this category are decided by a freezer you either have or do not have. Work that out first.
This is the question that should come before price, before brand, and before anything anybody puts in a deck, because it silently eliminates options and practices usually discover that after the first order rather than before it.
Two worlds
Cryopreserved material must stay frozen until use. In practice that means a validated shipper, dry ice, a delivery window somebody is physically present for, and storage at the specified temperature from arrival until the moment of use. If the specified temperature is −80°C, a standard laboratory freezer will not do it and a domestic one is not in the conversation.
Lyophilized material is freeze-dried and sits at room temperature or under ordinary refrigeration until it is reconstituted. That moves the work from your building to the moment of preparation: a reconstitution step, a diluent, sterile technique, and a window after reconstitution during which it has to be used.
What to establish before ordering anything
- What temperature does this material require, from dispatch to use?
- Do we have that storage, is it monitored, and is the monitoring logged?
- Who receives deliveries, and what are the hours? A validated shipper holds temperature for a stated period, not indefinitely.
- What is the procedure when a shipment arrives outside specification — who decides, and who bears the cost?
- Is there a temperature record in the box, and do we keep it?
- After reconstitution, how long is the material usable, and does that fit how we schedule?
The failure nobody photographs
A shipment arrives on a Friday afternoon, is signed for by somebody who does not know what it is, and sits on a counter until Monday. Everything about that material is now unknown. The certificate is still accurate about what left the facility, and it says nothing at all about what is in front of you now.
This is the most common way material of this kind is compromised, and it involves no bad actors — only a delivery, a weekend, and no procedure. It is also entirely preventable by deciding in advance who receives what, and when.
A shorter list, not fewer options
A practice without −80°C storage has not run out of options; it has a shorter list, and it is better to know that on the day of the decision than on the day of the delivery. If the answer changes what you should be ordering, that is the system working.
