Cord blood stem cells are a topic many expectant parents encounter through advertisements and information materials. Private companies offer cord blood banking as a form of biological insurance for your child. But is it worth it?

Here is a clear-eyed overview of what cord blood stem cells actually are, what they can be used for, and what leading health authorities say about private banking.

What are cord blood stem cells?

Cord blood is the blood found in the umbilical cord and placenta after birth. This blood contains hematopoietic stem cells — cells that can develop into various types of blood cells and replace diseased or damaged cells in the body.

Cord blood stem cells are similar to stem cells from bone marrow, but have some unique properties. They are younger, more flexible, and carry a lower risk of rejection in transplantation.

Cord blood stem cells are not the same as stem cells from the cord tissue itself. It is the blood inside the cord that contains the valuable hematopoietic stem cells.

What are stem cells used for today?

Stem cell transplantation is an established treatment for a number of serious diseases. The main uses today are:

Blood cancers (leukemia and lymphoma)
Rare bone marrow disorders in children
Severe immune deficiency disorders
Certain hereditary blood diseases such as sickle cell disease and thalassemia

Research is also ongoing into the use of stem cells for autoimmune diseases such as rheumatoid arthritis and lupus, but these are not yet established treatments.

Consider cord blood banking as part of your birth preparations. Write your decision into your birth plan so your care team knows your wishes — whether you plan to donate publicly, bank privately, or neither.

Public donation vs. private banking

There are two main options for cord blood: public donation and private banking. The differences are significant.

Public donation

With public donation, you give your baby's cord blood to a public cord blood bank. The blood is typed, registered, and made available to any patient who needs a transplant — domestically and internationally.

Benefits of public donation:

Completely free
Can save lives — cord blood from public banks is used in established treatments
Over 95 percent of patients of European ancestry can find a suitable donor through public registries
Contributes to the common good

The downside is that you have no exclusive claim to the blood. It becomes available to other patients who need it.

Private banking

Private companies offer to freeze and store cord blood exclusively for your child or family. Major providers operating globally include ViaCord, CBR (Cord Blood Registry), and CryoSave, among others.

Typical costs for private banking range from $1,500–$3,000 for collection and processing, plus an annual storage fee of $100–$300. Prices vary between providers.

Benefits of private banking:

A genetic match for your child
Immediately available if needed
May also match siblings

The downsides are considerable:

High cost with no guarantee the material will ever be used
The probability that your child will actually need their own stored stem cells is very low (estimated at 1 in 2,700 to 1 in 20,000)
Roughly half of collected samples are discarded by commercial banks because the stem cell count is too low to be useful
For hereditary diseases, the stored cells carry the same genetic defect

An important paradox: if your child develops a hereditary blood disorder, their own stored stem cells cannot be used — because those cells carry the same genetic defect that caused the disease. In that case, stem cells from a healthy, matched donor are needed.

What do leading health authorities say?

Major health organizations have weighed in clearly on this issue. The American Academy of Pediatrics (AAP) and the World Health Organization (WHO) have both issued statements that do not support routine private cord blood banking for the general population.

The AAP states:

Directed donation for a family member with a known disease that is treatable by stem cell transplantation is a reasonable choice. Private banking for future autologous use, however, is not recommended as a general practice given the remote likelihood of use.

The WHO has similarly noted that private cord blood banking represents a form of "biological insurance" that is not supported by current evidence for most families.

Health authorities do recognize that in specific circumstances, private banking may be relevant — for example, if the family already has a child with a disease treatable by stem cell transplantation.

How is cord blood collected?

Collection of cord blood happens right after birth and is painless for both you and your baby.

The process:

Baby is born and the umbilical cord is clamped and cut
A needle is inserted into the cord on the placenta side
Blood drains into a special collection bag
At least 70 ml of blood should be collected for banking to be worthwhile
The blood is sent to a laboratory for processing and cryogenic storage

The entire process takes 5–10 minutes and does not affect the birth.

Delayed cord clamping (waiting 1–3 minutes before cutting the cord) is recommended by the AAP because it provides the baby with additional blood and iron stores. Delayed clamping and cord blood collection are difficult to combine, as waiting reduces the volume available for collection. Discuss your preferences with your care team.

Situations where private banking may be appropriate

Even though health authorities do not broadly recommend private banking, there are exceptions:

Families with a known hereditary disease treatable by stem cell transplantation
A sibling with a disease that could benefit from stem cells from a newborn (directed donation)
Families with a rare tissue type where finding a donor is difficult

In these cases, your healthcare provider may be able to guide you toward directed cord blood banking specifically for a family member.

Frequently asked questions about cord blood

Can I privately bank cord blood?

Yes, private cord blood banking is available in most countries. You can use private companies that offer collection and storage, sometimes with facilities abroad. The AAP does not recommend private banking as a routine offering for all expectant families, but it is legal and available.

How long can cord blood be stored?

Cord blood stem cells can be stored cryogenically for several decades. Studies have shown that cells retain their function after more than 25 years in cryo-storage.

Does collection affect my birth?

No. Collection happens after the baby is born and the cord is cut. It is painless and does not affect the birth process. Your care provider will determine whether collection is feasible in each individual case.

What is the difference between autologous and allogeneic use?

Autologous means using your own stem cells. Allogeneic means using stem cells from a donor. The majority of successful stem cell transplantations today use allogeneic cells from a matched donor.

Does insurance cover private cord blood banking?

In most cases, no. Private cord blood banking is not covered by health insurance. All costs are borne by the family.

Our summary

Cord blood stem cells have real medical value, and research in this area continues to evolve. For the vast majority of families, however, private banking is an expensive form of insurance with a very low probability of ever being used.

The AAP and WHO do not recommend private banking as a general practice. Public donation is free and helps ensure that all patients who need a stem cell transplant have the best possible chance of finding a match.

If your family has a known hereditary disease, it may be worth discussing directed banking with your doctor. For everyone else, it is fair to say the money is likely better spent on other birth preparations.

Read also:

Sources

WHO: Cord blood banking
AAP: Cord Blood Banking for Potential Future Transplantation
National Marrow Donor Program / Be The Match: Cord blood basics
National Cancer Institute: Stem cell transplants

Cord Blood Stem Cells: Should You Bank Them?