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Where do umbilical cord MSCs actually come from?Fair question. Here's the plain answer.It starts with a donated umbilica...
10/14/2026

Where do umbilical cord MSCs actually come from?

Fair question. Here's the plain answer.

It starts with a donated umbilical cord, collected after a birth.

Slice the cord crosswise and you'd see three blood vessels. Two arteries and one vein. Around them is a soft, gel-like tissue called Wharton's jelly. That tissue is one place researchers isolate mesenchymal stromal cells (MSCs) from.

Because the cells come from a donor, the donor matters. Under federal rules for human cell and tissue products (21 CFR 1271), the donor has to be screened and tested for certain infectious diseases before the tissue can be used. Screening means a review of medical records for risk factors. Testing means lab tests on a blood sample. For cord tissue, the rule says the birth mother's sample is the one tested.

Three questions worth asking any clinic:
1. What tissue did these cells come from?
2. Was the donor screened and tested, and is that documented for my lot?
3. Which lab processed and tested the cells?

Researchers are still studying how cells from different parts of the cord compare, and more research is needed.

The drawing is an illustration, not a photo of any product.

Questions about whether any of this fits you belong with your own doctor.

Sources: 21 CFR 1271.45, 1271.75, 1271.80. Umbilical cord anatomy: Adv Exp Med Biol 2019 (PMID 30937871).

Educational only, not medical advice. Stem cell offerings are not FDA-approved to diagnose, treat, cure, or prevent any disease. Individual results vary.

🔬 Research spotlight: the first MSC therapy approved by the FDA. Here's what that does and doesn't mean.For years, peopl...
10/13/2026

🔬 Research spotlight: the first MSC therapy approved by the FDA. Here's what that does and doesn't mean.

For years, people in this space used the word "approved" loosely. So when an MSC product was actually approved by the FDA, the fine print is worth reading.

On December 18, 2024, Ryoncil (remestemcel-L-rknd), made by Mesoblast, was approved by the FDA. It's made from mesenchymal stromal cells (MSCs) taken from the bone marrow of healthy adult donors. The FDA called it the first approved MSC therapy.

The approval covers one use. Children 2 months and older with steroid-refractory acute graft-versus-host disease, a serious complication that can follow a donor blood stem cell transplant.

What the study did: a phase 3, single-arm study of 54 children. Eight IV infusions over four weeks.

What they reported: at day 28, 38 of the 54 children (about 70%) had a complete or partial response.

Now the limits.
There was no randomized control group. The response rate was compared against a preset benchmark.
54 children, one condition.
Reported side effects included infections, fever, and bleeding.
The study was sponsored by the manufacturer.

And what it doesn't mean. It doesn't make any other MSC product FDA-approved. Different cells, different source, different process. That includes the umbilical cord MSC products offered at clinics.

Heard someone call their stem cells "FDA-approved"? Ask three things. Which product? Which manufacturer? Which use is on the label?

Researchers are still studying MSCs in many other settings, and more research is needed.

The full breakdown is on the blog. Link in bio.

Sources: FDA news release, Dec 18, 2024. Kurtzberg et al., Biology of Blood and Marrow Transplantation 2020 (PMID 32018062; NCT02336230).

The cell image is an illustration, not a photo of any product.

Educational only, not medical advice. Stem cell offerings are not FDA-approved to diagnose, treat, cure, or prevent any disease. Individual results vary.

Nobody buys milk without checking the date.So here's a fair question about any viability number on a COA. When was it te...
10/13/2026

Nobody buys milk without checking the date.

So here's a fair question about any viability number on a COA. When was it tested?

Viability is the share of cells alive at the moment of the test. That's all it is. A snapshot. And a snapshot with no date is hard to read.

A viability number should come with three things:
1. The date it was tested.
2. The method used (trypan blue, flow cytometry, or an image-based counter, for example).
3. Whether it was measured post-thaw or before freezing.

If any of those are missing, ask. It's a normal question. A good lab report already has the answer.

Save this for the next COA you see.

Jesse is the Club's AI-generated guide, not a clinician. (Image is AI-generated.)

Educational only, not medical advice. Stem cell offerings are not FDA-approved to diagnose, treat, cure, or prevent any disease. Individual results vary.

Most bad decisions in this space don't start with a bad product. They start with a pitch nobody questioned.Here are five...
10/13/2026

Most bad decisions in this space don't start with a bad product. They start with a pitch nobody questioned.

Here are five red flags worth noticing. At any clinic. Us included.

1. Big promises. Or one product pitched for a long list of unrelated problems.
2. "FDA-registered" pitched as if it meant approval. A registered lab is not an approved product.
3. A viability number with no lot number, test method, or date.
4. Risks brushed off, or not mentioned at all.
5. Pressure to decide today or pay up front.

One red flag doesn't always mean walk away. It means ask more questions. If the answers get vague, that's an answer too.

Take this list to your own doctor as well. They know your history.

Save it for your next consult.

Based on ISSCR and FDA consumer guidance.

Jesse is the Club's AI-generated guide, not a clinician. (Image is AI-generated.)

Educational only, not medical advice. Stem cell offerings are not FDA-approved to diagnose, treat, cure, or prevent any disease. Individual results vary.

Five-star reviews are great at telling you the staff was friendly and the parking was easy.They're not built to tell you...
10/12/2026

Five-star reviews are great at telling you the staff was friendly and the parking was easy.

They're not built to tell you what a stem cell product does.

Here's why. A testimonial is one person's story. You don't hear from the people who didn't write one. There's no comparison group. Nobody checked what else changed in that person's life. And nobody picked the stories at random.

That's not a knock on anyone sharing their experience. It's just not what evidence looks like. The ISSCR, the main international stem cell research society, lists testimonials used as evidence as a warning sign.

What to ask for instead:
1. Is there a registered study? Ask for the NCT number.
2. What phase, and how many participants?
3. Was there a comparison group?
4. Did it look at the same product being offered to you?

You can look up any NCT number yourself on ClinicalTrials.gov. It's free. Just know a listing there isn't a government review of the study.

Read the reviews for the parking. Read the study record for the science.

Source: ISSCR, "Nine Things to Know About Stem Cell Treatments" (closerlookatstemcells.org).

Educational only, not medical advice. Stem cell offerings are not FDA-approved to diagnose, treat, cure, or prevent any disease. Individual results vary.

Two vials. Which one has more live cells?Vial A says 100 million cells.Vial B says 60 million cells.Most people pick A. ...
10/12/2026

Two vials. Which one has more live cells?

Vial A says 100 million cells.
Vial B says 60 million cells.

Most people pick A. Bigger number.

Now add the number that often isn't on the brochure. Viability, the share of cells alive when tested.

Vial A: 100 million x 40% viable = 40 million live cells.
Vial B: 60 million x 80% viable = 48 million live cells.

The smaller label has more live cells.

(Made-up example numbers, not from any real product.)

That's the whole formula. Viable cell count = total count x viability %.

So when someone quotes you a cell count, ask three things:
1. What's the viability?
2. Was it measured post-thaw, or before freezing?
3. What's the viable cell count for my exact lot, and is it on the COA?

One honest limit. Live isn't the whole picture. Viability doesn't tell you what type of cells they are or how well they function. Those are separate tests.

Save this for the next time you see a big number.

Educational only, not medical advice. Stem cell offerings are not FDA-approved to diagnose, treat, cure, or prevent any disease. Individual results vary.

Most people don't get bad answers. They just never ask the questions.Here are four worth asking anyone. Us included.1. W...
10/12/2026

Most people don't get bad answers. They just never ask the questions.

Here are four worth asking anyone. Us included.

1. What's this product's FDA status? Approved, studied under an IND or clinical trial, or neither?
2. Can I see the COA for the exact lot I'd receive?
3. Who administers it, and what are the known risks?
4. What's the total cost, in writing?

If you want to ask us, we offer a free 15-minute consult by phone or Zoom. Bring this list. If we're not a fit, we'll tell you honestly.

And talk with your own doctor too. They know your history.

Book through the link in bio.

Jesse is the Club's AI-generated guide, not a clinician. (Image is AI-generated.)

Educational only, not medical advice. Stem cell offerings are not FDA-approved to diagnose, treat, cure, or prevent any disease. Individual results vary.

“Can I see the COA before my appointment?”Ask. It's one of the most useful questions in this whole space, and one of the...
10/11/2026

“Can I see the COA before my appointment?”

Ask. It's one of the most useful questions in this whole space, and one of the easiest.

A COA (certificate of analysis) is a lab report for one lot of product. It's not a brochure. It's not FDA approval. It's test results.

Ask for it before you pay. Ask for the one that matches the lot you'd receive, not a sample sheet.

When you get it, look for five things:
1. A lot number that matches the vial.
2. Viability, whether it was measured post-thaw, the method, and the date.
3. Viable cell count, not just total count.
4. Sterility, endotoxin, and mycoplasma results.
5. The lab that ran the tests, plus a signature and date.

Here's the honest catch. A COA tells you what was tested on one lot. It doesn't predict how you'll respond. That's a conversation for your own doctor.

If the answer to "can I see it?" is no, that's useful information too.

Save this list for your next consult.

Educational only, not medical advice. Stem cell offerings are not FDA-approved to diagnose, treat, cure, or prevent any disease. Individual results vary.

Most people look at one number on a stem cell lab report. Here's what we covered this week, so you can read the rest.1. ...
10/11/2026

Most people look at one number on a stem cell lab report. Here's what we covered this week, so you can read the rest.

1. Count and viability are two different numbers.
Cell count is how many cells there are. Viability is the share alive when tested. A big count with low viability means fewer live cells.

2. Timing matters.
Pre-freeze viability is measured before the cells are frozen. Post-thaw viability is measured after they're thawed, which is closer to what is actually given. Ask which one you're looking at.

3. The method matters.
Trypan blue, flow cytometry (7-AAD or PI), and AO/PI counters all measure viability. NIH researchers found these methods agreed on fresh products but varied on cryopreserved ones. They tested blood-derived and T-cell products, not MSCs, so more research is needed there.

4. Safety tests aren't viability tests.
Sterility, endotoxin, and mycoplasma check for contamination. None of them tell you whether cells are alive.

One more. Viability isn't potency. It tells you cells are alive when tested, not how well they function.

Save this for the next time someone hands you a COA.

Source: Cai et al., Cytotherapy 2024 (PMID 38085197).

Educational only, not medical advice. Stem cell offerings are not FDA-approved to diagnose, treat, cure, or prevent any disease. Individual results vary.

“Studies show…”You'll hear it a lot in this space. Here's how to check it in about five minutes.1. Ask for the study ID....
10/11/2026

“Studies show…”

You'll hear it a lot in this space. Here's how to check it in about five minutes.

1. Ask for the study ID. A registered trial has an NCT number. A published paper usually has a PubMed ID.

2. Look it up yourself. ClinicalTrials.gov and PubMed are both free, and both are run by the National Library of Medicine at NIH.

3. Read the basics. What phase? How many people? Was there a control group? Is it finished, and were findings posted?

4. Check the match. Was it the same kind of cell, from the same source, prepared the same way, as the product you're being offered?

One catch most people miss. ClinicalTrials.gov says it plainly: listing a study does not mean it has been evaluated by the U.S. Federal Government. A listing is a starting point, not a stamp of approval.

If someone can't name the study, that's an answer too.

Bring what you find to your own doctor. That's what the homework is for.

Jesse is the Club's AI-generated guide, not a clinician. (Image is AI-generated.)

Educational only, not medical advice. Stem cell offerings are not FDA-approved to diagnose, treat, cure, or prevent any disease. Individual results vary.

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