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, Czech Republic
Cord blood banks must be licensed by the State Institute of Drug Control.
- What questions should parents ask a Family Bank about collecting cord blood?
- What instructional tools are provided for the physician and delivery staff?
- Will the cord blood company actively contact the labor and delivery staff for you -- or are parents responsible for keeping them informed and coordinated?
- What collection method do they use: gravity drip or blood draw?
- Is the collection blood bag sterile, both inside and out, so that it can be used in the operating room for a C-section?
- Do they provide the option of collecting additional stem cells from the placenta or tissue of the umbilical cord?
- What are the most important things to do when collecting cord blood?
1. Read the instructions on the kit! Too many healthcare providers think that they don't need to read and follow instructions.
2. Sterilize before every needle stick. When in doubt, sterilize again!
3. Volume, volume, volume. You want to "milk the cord" for as much blood as possible. If the blood vessel you are using stops working, try another or move upstream, but sterilize first.
- Processing: Must cord blood be processed before storage?
The earliest cord blood transplants were performed with whole cord blood. Thus, it is not absolutely necessary to process cord blood in order to save patient lives. There has never been a prospective randomized trial to compare transplant patient outcomes with cord blood that had been stored whole versus processed.
Most cord blood banks, both public and private, now process cord blood to remove both the plasma and the red cells, and cryo-preserve the remaining buffy coat holding stem cells. Some banks also save the removed red cells and plasma in companion storage. Some banks save a sample of maternal blood.
The removal of plasma is also called volume reduction. The volume reduction enables more collection units to fit in a freezer and requires less cryogenic nitrogen per unit.
Also, the majority of banks remove red blood cells prior to freezing, primarily because these cells often burst during freezing and release iron from hemoglobin that can be toxic. The alternate to removing the red cells before freezing is to wash any broken cells out of the collection upon thaw. Removing the red cells also removes the donor's blood type (the ABO and Rh types). When cord blood goes from a donor to a patient for a transplant, the donor and patient can be compatible on all the HLA types used for transplant matching and still have incompatible red blood types.