Stem cell banking is the process of collecting, processing, and freezing stem cells so they can be stored long-term for potential medical use. The most common form involves collecting blood from a newborn’s umbilical cord right after delivery, but stem cells can also be banked from bone marrow, dental pulp, and other tissues. These cells are valuable because they can mature into different types of blood and immune cells, making them useful for treating serious diseases like leukemia, lymphoma, and sickle cell anemia.
How Stem Cells Are Collected and Stored
For cord blood banking, the collection happens immediately after a baby is born. Once the umbilical cord is clamped and cut, a healthcare provider draws the remaining blood from the cord into a collection bag. The process is painless for both mother and baby and takes only a few minutes. The blood is then transported by medical courier to a processing lab.
At the lab, stem cells are separated from the rest of the blood and mixed with a protective solution before being slowly cooled to minus 196°C using liquid nitrogen. This deep freeze, called cryopreservation, allows stem cells to retain high rates of survivability for years. Banked stem cells have been successfully thawed and used in transplants after being stored for well over a decade.
Beyond cord blood, other sources are gaining attention. Baby teeth and extracted adult teeth contain stem cells in the dental pulp that can be harvested and frozen. These cells are a type that may prove useful in regenerative medicine, and they would otherwise be discarded as medical waste. Adult stem cells from bone marrow can also be collected and cryopreserved for a specific patient ahead of a transplant.
What Banked Stem Cells Can Treat Today
The only stem cell therapy routinely approved by the FDA is blood stem cell transplantation. It treats cancers and disorders affecting the blood and immune system, including:
- Blood cancers such as leukemia and lymphoma
- Bone marrow failure conditions requiring a transplant
- Blood disorders like sickle cell disease and other severe anemias
- Immune system disorders where the body’s defenses don’t function properly
Researchers at institutions like Mayo Clinic are running clinical trials exploring banked stem cells for neurodegenerative conditions, including Parkinson’s disease, Alzheimer’s, and ALS. Some programs are building entire cell banks from skin samples reprogrammed into versatile stem cells that could one day treat chronic diseases. These applications are not yet standard care, but they represent the broader potential that drives many families to bank cells now.
Public vs. Private Banking
There are two main options for cord blood banking, and they work very differently.
Public cord blood banks accept donations at no cost to the family. Once donated, the cord blood becomes available to anyone who is a match, much like a community blood bank. The American College of Obstetricians and Gynecologists recommends public banking as the preferred method for obtaining cord blood for transplantation because it expands the pool of available matches for patients who need them.
Private cord blood banks store the sample exclusively for your family’s use. This comes with significant fees, but it guarantees the cells are reserved if a family member needs them. Private banking makes the most sense for families with a known history of conditions treatable by stem cell transplant, or if a sibling or relative currently needs one.
One important limitation to understand: cord blood collected from a baby generally cannot be used to treat a genetic disease or cancer in that same child. The stored cells carry the same genetic makeup, including whatever variant or premalignant cells led to the condition. A sibling’s banked cord blood, however, can be a lifesaving match.
What Private Banking Costs
Private cord blood banking requires both an upfront processing fee and ongoing annual storage costs. Based on current pricing from one major bank, expect to pay roughly $1,500 to $1,850 for initial processing, testing, and medical courier service for cord blood alone. Adding cord tissue storage brings the first-year total to around $2,800 to $3,200.
After the first year, annual storage fees run about $199 per year for cord blood. If you also banked cord tissue, that doubles to roughly $398 per year. Over 20 years, total costs can easily reach $5,000 to $10,000 depending on the plan and bank you choose. Some banks offer prepaid multi-year packages to reduce the long-term expense.
Public banking, by contrast, costs families nothing. The trade-off is that you give up ownership of the sample.
How to Evaluate a Stem Cell Bank
If you choose private banking, accreditation is the single most important quality marker. The AABB (Association for the Advancement of Blood & Biotherapies) accredits facilities that collect, process, and store cellular therapy products, including cord blood stem cells. Their assessors physically visit each facility every two years to verify that practices meet established standards. Look for AABB accreditation on any bank’s website before signing a contract.
Beyond accreditation, ask how many samples the bank has released for transplant and what the post-thaw cell viability rates look like. A bank that has never had a sample used in an actual treatment has less of a track record than one with documented transplant outcomes. You should also confirm whether the bank has a contingency plan if it goes out of business, since your cells may need to be stored for decades.
Who Benefits Most From Banking
For families with a history of blood cancers, sickle cell disease, immune deficiencies, or other conditions treated by stem cell transplant, private banking offers a concrete safety net. The stored cells are a guaranteed genetic partial-match for siblings and parents. If a family member is already diagnosed with a treatable condition, banking a new sibling’s cord blood can be a direct path to transplant.
For families without these risk factors, the likelihood of ever using privately banked cord blood is low. In those cases, donating to a public bank contributes to a registry that helps patients who have no matching donor. Not every hospital participates in public cord blood collection, so if this interests you, check whether your delivery hospital is a collection site well before your due date.