Safety standards
Canadian Blood Services' Cord Blood Bank is accredited by AABB - an organization committed to advancing transfusion and cellular therapies worldwide, as well as the Foundation for Accreditation of Cellular Therapy (FACT).
How cord blood is handled
Processing
Donations are sent to our manufacturing facility for assessment, processing, testing and storage (cryopreservation). We remove excess red blood cells and plasma using the Sepax processing system. This reduces the volume of each cord blood unit while keeping blood-forming stem cells. Those cells are combined with the dimethyl sulfoxide, a preservative that protects them from damage during freezing.
Freezing
Cryoprotected cells are transferred to a specially designed freezer bag and sealed in an overwrap bag for individual quarantine in a BioArchive freezer. The BioArchive is a robotic freezer that controls and monitors the rate of freezing. The cord blood unit is cooled to approximately -50 degrees Celsius over 25 minutes to minimize damage to the cells.
Storage
Once cooled, the cord blood unit is submerged and stored in liquid nitrogen at a temperature of -196 degrees Celsius. This allows them to be banked for a long period of time — and made available to Canadian and international patients who need stem cell transplants. While it is still not known exactly how long cord blood can be stored in liquid nitrogen, there are examples of cord blood stem cells being transplanted after 13 years without any deterioration in quality. With this knowledge — and by staying directly involved with the medical community — Canadian Blood Services’ Cord Blood Bank confidently provides the highest-quality cord blood stem cells for transplantation.