Steven Joffe of the Perelman School of Medicine said the cost of private cord blood banking is hard to justify at this point, unless someone in the family is known to have a blood disorder that required a stem cell transplant. “The data suggest there might be a little help there, but I find it not at all convincing,” he said.
https://www.nytimes.com/2020/12/18/parenting/pregnancy/cord-blood-banking.html The New York Times