Mar 26 • General discussion
“Never Frozen”...What That Actually Means (And What It Doesn’t)
To make sense of it, you have to start with how these procedures are actually regulated in the United States. Most of what people casually refer to as “stem cell therapy” falls into one of two broad categories.
On one side, you have the Section 361 framework…procedures that are considered minimally manipulated, used in a homologous way, and often performed within the same surgical setting.
On the other, you have Section 351, which is the full biologics pathway…the same regulatory category as drugs, with all the complexity, cost, and oversight that implies.
The phrase “never frozen” almost always lives on the 361 side.
In practical terms, that means a physician can take your tissue…bone marrow, blood, etc…place it into a centrifuge, spin it for about 15 to 20 minutes, and reinject it back into your body during the same procedure.
But here’s where things start to diverge from what patients think is happening.
“Minimal manipulation” is a regulatory classification.
It is not a quality standard.
Cash-pay clinics operating under this model are not performing cell quantification assays. They’re not running sterility tests. They’re not validating potency. And they’re not operating under GMP manufacturing conditions.
If they did any of those processes, they would be “more than minimal manipulating” the tissue. So they can’t, by Law! Or they would have to reclassify the entire procedure under Section 351…and they really dont want to do that
This is where the “never frozen” marketing slogan comes in
If you look at a typical BMAC procedure…extract, spin, inject…the actual number of mesenchymal stem cells in that sample is extremely small.
We’re talking about something on the order of one stem cell for every 100,000 of the other kind of cells in the original tissue. Even after centrifugation, you might end up with roughly 100k stem cells in total, sometimes less depending on the doctor’s technique.
That’s not a lot.
Now imagine taking that already small population and putting it through a freeze–thaw cycle. Losing 20% of the cells during thawing is not unusual.
Even though freezing itself is not illegal under Section 361. The "Never Frozen" choice isn't about a quality parameter such as “freshness". It's about the quality parameter of “cell preservation" of a tiny cell dose…
Now shift to a completely different model.
In the Section 351 world…or in most international laboratory-based systems…stem cells are not just concentrated, they’re expanded. They’re isolated and grown over time, often for weeks, until you’re no longer dealing with thousands of cells, but tens or even hundreds of millions.
At that scale, everything changes.
If you lose 20% of 50 million cells during thawing, you still have 40 million left. The loss becomes therapeutically tolerable. If a clinic practices proper cryopreservation protocols…post-thaw viability can fall in the range of 90%.
In that environment, freezing isn’t a liability…It’s infrastructure. Along with clean rooms, batch records, environmental monitoring, quality control, and documentation chains
It’s what allows storage, transport, quality assurance assays, and repeatability.
So now you have two completely different systems solving two completely different problems.
One is a same-day, low-yield procedure that prioritizes preserving every available cell. The other is a high-yield, lab-based process that can tolerate controlled losses because of scale.
The confusion happens when those two systems get compared using some catchy phrase.
“never frozen” = good; “frozen” = bad
…and they will argue that until it's tattooed in your mind…it's called “branding”.
But in practical terms it reflects constraint. A limitation in yield. A boundary in processing. A position within a specific regulatory framework.
And this is usually the point where some clinic representatives get triggered.
That’s fine.
Because my role in this space isn’t to defend one model over another. It’s to analyze what’s actually being done. I look at the processes, the structure, and the level of transparency…what patients are actually able to see and verify before they make a decision. Then I translate that into plain terms so people understand what they’re paying for.
Because the real issue in this space is the information asymmetry.
Clinics know exactly how their cells are sourced, processed, and handled. They understand the limitations, the trade-offs, and the constraints.
Patients, on the other hand, are often making decisions based on a website, testimonials, and a handful of catchy phrases.
“Never frozen” is a catchy phrase. It’s not false. But it’s 90% incomplete.
It doesn't tell you about cell viability. It doesn’t tell you there’s no testing done. It doesn’t say the process is based on a benchtop centrifuge.
It insinuates that “fresh is better” and that it's worth $5,000
That’s the gap I focus on.
Because at the end of the day, this isn’t about whether something is fresh or frozen.
It’s about understanding the full system behind it.
The cells are not the product...The structure is.
Everything else is just framing.
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“Never Frozen”...What That Actually Means (And What It Doesn’t)
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