I actually have to disagree with the post that said cord blood donations don't actually go to people.
I will fully admit some of it IS used in research, but some of that research actually does involve treating patients.
The stem cells in cord blood ARE adult stem cells.
Adult is a bit of a misnomer though.
The technical term is multipotent, as opposed to pluripotent, which are embryonic stem cells.
I am a leukemia survivor.
I needed a bone marrow transplant, but did not have a matched donor.
The cord blood contains the same type of stem cells as the marrow, so in some cases, cord blood can be used instead of marrow.
My transplant was part of a clinical trial, but it used cord blood that came from the donor cord blood bank.
Since I was an adult, they had to use two units, which interestingly enough, meant two different donors.
But cord blood matching is not quite as stringent as matching from an adult donor.
The cord blood used in my transplant was only a 6 to 10 match to me.
If I had used an adult donor that was only a 6 to 10 match, it would have killed me.
Even though both cord blood and marrow are adult stem cells, the cord blood is coming from a baby who will not have as many antigens as adults do.
The antigens are what makes matching difficult.
While you CAN donate to research, you CAN also donate to the cord blood public donor's bank.
In the US, it is ran by the marrow registry.
All that being said, I agree with the others that I do not think you can do both.
Once the cord has stopped pulsating, there is usually not any blood left.