How long do frozen cord blood cells remain viable?
It is not known how long cord
blood can be stored in liquid nitrogen and its cells remain viable.
NCBP's earliest units were stored in 1993. In checking the viability of
cells in cord blood units that will not be used for transplantation, we
have not detected any deterioration in the quality of the cells in cord
blood units stored for up to 16 years. Units stored for up to 13 years
have been used in transplants and the outcomes have been similar to
those of newly collected units. Thus, we are not aware of any reason to
expect any significant deterioration in the quality of stored cord blood
units.
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