How Does Stem Cell Banking Work? A Step-by-Step Guide

Stem cell banking works through six connected steps, from enrollment to long-term cryogenic storage. Cord blood can only be collected once, in the minutes right after birth, so there's no second attempt if any stage goes wrong. This guide breaks down exactly what happens at each step, in order, so you know what to expect before your due date arrives. No guesswork.

Key Takeaways

●      Six-step process: enrollment, collection, transport, lab processing, cryopreservation, and storage, completed in that exact order.

●      One-time collection window: cord blood can only be collected in the minutes after birth, so enrollment needs to happen well before labor begins.

●      Accreditation affects every later step: FACT and AABB accreditation, along with FDA licensing, determine how a lab is allowed to process and store the sample.

●      Cryopreservation is a controlled science: cells are cooled gradually and stored in liquid nitrogen to stay viable for the long term.

●      Timing matters more than most parents expect: a delay between collection and lab processing can affect cell viability, which is why courier pickup is time-sensitive.

Here's what actually happens at each of those six steps.

What Happens During Stem Cell Banking, From Enrollment to Storage?

Stem cell banking involves six stages: choosing a bank and enrolling, receiving a collection kit, collecting cord blood at birth, transporting the sample to a lab, processing and testing it, and cryopreserving it for long-term storage. Each stage depends on the one before it. A delay at any point, especially between collection and processing, can affect how usable the sample is later. The sections below walk through each stage individually.

How Do You Enroll and Choose a Stem Cell Bank?

Enrollment happens before birth, usually during the second or third trimester, and it's where you register with a bank and select a plan. Most doctors recommend deciding well before your due date, since a late decision leaves little room to research your options properly.

Choosing a bank at this stage is worth slowing down for. Look at three things: accreditation (FACT and AABB are the two main quality benchmarks in cord blood banking), whether the bank holds an FDA license for any of its cell-based products, and how long the bank has actually been operating. StemCyte, for example, has operated since 1997, holds FDA US License 2280 for its REGENECYTE® cord blood-derived therapy, and is both FACT and AABB accredited. Once you enroll, the bank ships a collection kit, and the rest of the process is largely out of your hands.

What Happens After You Enroll?

After enrollment, the bank ships a temperature-controlled collection kit to your home, typically free of charge. You bring this kit with you to the hospital, and your OB or midwife uses it at delivery.

The kit itself is simple: collection bags, labels, and instructions your provider will already be familiar with. Nothing about this stage requires action from you beyond packing the kit in your hospital bag, alongside everything else on your checklist.

How Is Cord Blood Collected at Birth?

Collection happens immediately after delivery, once the umbilical cord has been clamped and cut. Your OB or midwife inserts a needle into the cord and draws blood into a collection bag, a process that takes only a few minutes.

This step is painless for both mother and baby, since the cord is already separated from the newborn by the time collection begins. It doesn't interfere with labor, delivery, or immediate bonding time. The one thing that matters most here is timing: cord blood can only be collected in this narrow window, so if it's missed, it's missed for good.

How Does the Cord Blood Reach the Lab?

Once collected, the sample is sealed and picked up by a dedicated courier, often on a 24/7 basis, since births don't happen on a schedule. The sample travels in temperature-controlled packaging to keep the cells stable in transit.

This is a stage most parents never see, but it's one of the more time-sensitive parts of the whole process. Cell viability can decline the longer a sample sits before processing, which is why banks build round-the-clock pickup into their logistics instead of relying on standard shipping.

What Happens to the Cord Blood in the Lab?

At the lab, the sample goes through processing and testing before it's ever frozen. Technicians separate the stem cells from the rest of the blood, then test the sample for cell count, viability, and infectious disease markers.

This is where facility standards matter most. Processing at an FDA-licensed, cGMP-compliant facility means the lab follows the same manufacturing and quality-control standards used for regulated biological products, not just general lab hygiene. StemCyte processes samples at its FDA-licensed cGMP facility, using the same infrastructure behind its FDA-licensed REGENECYTE® product.

How Are the Stem Cells Frozen and Stored Long-Term?

Once testing is complete, the cells are cryopreserved, a controlled freezing process that protects them from ice-crystal damage, then transferred into long-term liquid nitrogen storage.

Cells aren't simply placed in a freezer. A cryoprotectant is added first, and the sample is cooled gradually rather than flash-frozen, which helps the cells survive the transition intact. From there, storage happens in monitored cryogenic tanks, often with 24/7 environmental monitoring, so the sample stays stable for years.

What Happens If the Stored Cells Are Ever Needed?

If a qualifying medical need arises, a treating physician requests the release of the stored sample, which is thawed and prepared for use in coordination with the transplant center. Cord blood stem cells are currently used in transplants for more than 80 conditions, including certain blood cancers, immune deficiencies, and other serious blood disorders, and research into additional uses is ongoing.

This step is one families hope never to need. But a well-processed, properly accredited sample is what makes this final step possible in the first place, which is why the earlier steps, especially processing and storage, matter as much as they do.

Why Families Choose StemCyte for This Process

Not every bank runs each of these six steps the same way, and the differences tend to show up at the processing and storage stages rather than at collection. StemCyte has operated as a cord blood bank since 1997 and is one of the only companies running both a private and a public cord blood bank, which gives enrolled families access to a wider donor-matching network. It's also one of only two FACT-accredited private cord blood banks in the US, and the only one with an FDA-licensed cord blood product, REGENECYTE®, under US License 2280. Since opening, StemCyte has delivered more than 2,300 cord blood units to over 325 transplant centers worldwide.

One Decision, Made at the Right Moment

Every step in this process, from enrollment to long-term storage, exists to protect one narrow window: the minutes right after your baby is born. Understanding what happens at each stage doesn't just satisfy curiosity. It helps you ask better questions before you commit to a bank.

If you're weighing your options, building a plan takes a few minutes, and StemCyte's team handles the collection kit, courier pickup, and lab processing from there.

Call (866) 389-4659 to speak with the StemCyte team, or build your plan online to get started before your due date.

Frequently Asked Questions About the Stem Cell Banking Process

How long does the entire process take, from enrollment to storage?

Enrollment can happen anytime before birth, though most banks recommend deciding by the third trimester. Once collection happens at birth, transport, lab processing, and cryopreservation are typically completed within days.

Is cord blood collection safe for the mother and baby?

Yes. Collection happens after the umbilical cord has already been clamped and cut, so it doesn't affect the baby, and it doesn't interfere with labor or delivery for the mother.

What happens if I go into labor before I've enrolled?

Cord blood can only be collected with a kit already at the hospital, so enrolling after labor has started generally isn't possible. This is why banks recommend deciding well before your due date rather than waiting.

Does the process differ between public and private banking?

The collection and processing steps are largely the same either way. The difference is in who can access the sample afterward: private banking reserves it for your family, while public banking makes it available to any matching patient in need.

Can cord tissue be banked using the same steps?

Cord tissue banking follows a similar collection and shipping process, but it's processed and stored separately from cord blood, since it contains a different type of stem cell.