Bone marrow banking and fat banking both begin with a collection, and the two are done differently. This post compares how each tissue is collected and stored and how FDA classifies it. It also says what is not known.
TLDR Marrow is drawn from bone with a wide needle, and fat is removed with a blunt cannula. We found no study comparing the pain of the two, so nobody can honestly rank them. No adipose-derived product has FDA approval to treat any disease, and banking does not guarantee any future use.
Important Disclaimer: Save My Fat does not provide FDA-approved treatments or cures for any disease. Banking adipose tissue today does not guarantee eligibility, access, or clinical benefit from any future therapy, clinical trial, or medical program. All content is for educational purposes only and does not constitute medical advice. Patients must consult their own licensed healthcare professionals regarding all medical decisions.
Is banking bone marrow the same as banking fat? No. They are different tissues collected in different ways, and FDA’s tissue rule does not treat them the same.
Let’s define the term first. Here, bone marrow banking means having your own marrow collected and stored frozen, and fat banking is the same idea with adipose tissue. We did not find an FDA, NIH or HRSA statement on private marrow banking for adults, so the marrow side comes from collection for diagnosis and donation.
Is Bone Marrow Banking or Fat Banking the Easier Collection?
No reference below ranks them, so nobody can honestly call either one easier. What you can compare is what each collection involves.
The marrow column uses the National Cancer Institute’s definition of bone marrow aspiration and HRSA’s page on donating bone marrow. The fat column uses clinical references on fat harvest and liposuction. None was written about collection for banking, so read it as a picture of the procedures.
| Point | Bone marrow | Fat |
|---|---|---|
| Site | “usually from the hip bone, breastbone, or thigh bone” | “the abdomen, periumbilical area, buttocks” and thigh |
| Numbing | Local anesthetic, or anesthesia in a hospital for donation | Lidocaine in a “wetting solution”, sometimes sedation or general anesthesia |
| Tool | “a special wide needle” and a syringe | A scalpel cut, then a blunt cannula |
Each has its own steps and risks. Ask the provider doing your collection to walk you through theirs, and use our guide to compare banking services.
Is Fat Collection Less Painful Than Bone Marrow Collection?
Nobody can honestly say yet. We found no study comparing the pain of the two collections.
On marrow, a clinical reference on aspiration and biopsy says “There are multiple points in the procedure that can cause pain to the patient”. In a 2003 pain study, “Eighty-six percent reported procedural pain”, and the authors called the pain “transient”. But those were hematology patients having a diagnostic test, not healthy adults banking tissue. So that is limited evidence, not the pain of bone marrow banking.
On fat, the harvest reference says “Bruising, edema, and ecchymosis are the most common sequelae” and lists “Pain at the donor site due to inadequate anesthesia” as a complication. We have no pain percentage for fat harvest. A missing number is not a lower number, so the two cannot be scored against each other. Ask your own licensed provider what to expect.
How Does FDA Classify Each Tissue and Its Storage?
FDA’s tissue rule puts them in different places. It covers what FDA calls HCT/Ps, its shorthand for human cell and tissue products. 21 CFR 1271.3(d)(4) leaves one form of marrow out of that definition: “Minimally manipulated bone marrow for homologous use and not combined with another article”. Read that narrowly. It does not say marrow banking is unregulated. Ask a marrow bank which other rules apply.
Fat meant to go back into a person falls inside the definition. FDA’s July 2020 guidance says “FDA considers adipose tissue to be a structural tissue for the purpose of applying the HCT/P regulatory framework.” On frozen storage it says “an HCT/P that is cryopreserved and stored in liquid nitrogen vapor, would generally meet the minimal manipulation criterion.” In FDA’s example of isolating cells from fat, “the HCT/P generally is considered more than minimally manipulated”.
On the fat side, what is stored is your own adipose tissue, and our cryopreservation safety post covers that. For marrow, ask the bank what it stores.
What Has FDA Approved From Marrow or Fat?
FDA has approved a cell therapy made from donor bone marrow and none made from fat. The December 18, 2024 press announcement describes “an allogeneic (donor) bone marrow-derived mesenchymal stromal cell (MSC) therapy” for one condition in children.
That does not give your own banked marrow or fat an approved use. FDA’s approved products list, current as of 09/17/2026, has no entry containing the word “adipose” or “fat”. No adipose-derived product has FDA approval to treat any disease.
Frequently Asked Questions
Is bone marrow banking regulated by FDA?
We can only answer part of that. FDA’s tissue rule leaves one form of marrow out of one definition, so ask any marrow bank which rules it follows.
What are the risks of each collection?
The marrow reference says “Post-operative bleeding is common” and lists infection. The liposuction reference names a deep vein thrombosis as its most disastrous complication. Ask your own licensed provider how those apply to you.
Is fat collection for banking the same as liposuction?
That is a question for the provider doing your collection. The descriptions here were written about liposuction and fat harvest for facial grafting, not banking.
Can banked marrow or fat be used for a treatment later?
No one can tell you that today. Any future use depends on FDA regulatory status, physician guidance, and the availability of approved or investigational pathways at that time. Banking does not guarantee any future use.
Key Takeaways
Marrow and fat are collected in different ways, and no reference here ranks one as easier or less painful. FDA’s tissue rule treats the two tissues differently. The approved cell therapy described here uses donor marrow, which says nothing about your own banked tissue. No adipose-derived product has FDA approval to treat any disease.
Save My Fat connects patients and providers with a U.S.-based tissue bank. It is not a tissue bank, a laboratory, a medical practice, or a treatment provider. Stem cell and regenerative medicine regulations vary by state, including specific informed-consent and disclosure requirements in Florida, Utah, California, Georgia, and Tennessee governing tissue and stem cell services. Banking adipose tissue does not connect patients to any treatment pathway, and any future use depends on FDA regulatory status, physician guidance, and the availability of approved or investigational pathways at that time.
To look into adipose tissue banking for potential future use, see the pricing page or reach out through the contact page.
Save My Fat works with a U.S.-based tissue bank for laboratory processing and storage.
This article is for educational purposes only and does not constitute medical or legal advice. Please consult your own licensed healthcare provider before making any decisions about treatment or research participation.
About the author: Oscar Tellez is the founder and CEO of Save My Fat. He holds a Bachelor of Science in Exercise Science and Health Promotion from Florida Atlantic University. He has spent a decade in the regenerative medicine industry across product distribution, laboratory and vendor relationships, and provider training. He is not a licensed clinician, and this article is educational, not medical advice.
Related guide: stem cell science glossary.
