How do I know if a stem cell clinic is legitimate?

Legitimate providers review your imaging before recommending treatment, use image-guided injection (ultrasound or fluoroscopy), use autologous procedures (your own cells) rather than off-the-shelf amniotic or cord blood products, disclose that stem cell therapy is not FDA-approved for orthopedic use, and can discuss the MILES Trial findings. They don't promise cures or guarantee outcomes.

Are amniotic stem cell injections legitimate?

Most amniotic and umbilical cord products marketed as 'stem cell therapy' contain few or no viable stem cells after processing, per independent analyses and FDA inspections. The FDA has issued warning letters against specific manufacturers in this category. These products are not the same as autologous procedures (using your own bone marrow or fat tissue), which have stronger evidence.

What is the MILES Trial and why does it matter?

The MILES Trial (Mautner et al., Nature Medicine, 2023) was a 480-patient randomized controlled trial comparing stem cell therapy to corticosteroid injection for knee osteoarthritis. It found no statistically significant advantage for stem cells at 12 months. A provider who doesn't know this study — or can't discuss it specifically — has a training or credibility problem.

RegenSelect · Research Guide

10 Red Flags When Researching Stem Cell Clinics

These aren't theoretical warnings. They're the patterns that show up consistently in the accounts of patients who spent thousands and got nothing — or worse.

The stem cell therapy market contains serious, evidence-guided providers — and it contains aggressive marketers who have identified chronic pain patients as a high-value target. The same procedure name covers both. The difference is in the clinical judgment, the product quality, and the honesty of the provider.

These ten flags don't guarantee a bad outcome. But they appear, reliably, in the accounts of patients who regret how they chose their clinic.

High concern

Worth investigating

They're willing to treat you without reviewing your imaging

A legitimate provider needs to know your Kellgren-Lawrence grade (for OA) or the extent of a soft tissue injury before recommending anything. That requires an MRI or X-ray. If a clinic is ready to schedule you for a $6,000 procedure without first reviewing your imaging — or without asking for it — they are running a volume operation, not a clinical practice.

What to do: Ask: 'What imaging do you need to review before recommending a protocol?' If they don't ask, you have your answer.

The product is 'amniotic' or 'umbilical cord' stem cells

These are processed donor products sold off-the-shelf. The FDA has repeatedly warned that most of these products contain few or no viable stem cells after processing — and has issued enforcement letters against specific manufacturers. They are cheaper to administer, heavily marketed, and not the same thing as using your own cells. 'Stem cell therapy' that doesn't involve your own biology is, in most cases, not stem cell therapy.

What to do: The strongest evidence base is for autologous procedures — your own bone marrow (BMAC) or fat tissue. If a clinic doesn't use your own cells, ask specifically why.

The injection isn't image-guided

Ultrasound or fluoroscopy guidance is what places cells precisely at the target site within the joint. Blind injections — placed by feel alone — land cells wherever the needle ends up. The outcomes data for unguided injections is meaningfully weaker. Some lower-cost providers skip imaging guidance to reduce procedure time. The cost savings are yours to absorb in worse results.

What to do: Ask directly: 'Is this injection ultrasound-guided or fluoroscopy-guided?' Any hesitation or 'we don't need that' is a red flag.

They quote a price before knowing anything about your case

The right protocol — and the right price — depends on your diagnosis, the joints involved, your age, activity level, and imaging findings. A clinic that emails you a flat price from a website contact form before a single conversation about your history is not doing patient selection. They are doing sales.

What to do: A serious clinic will not quote a final price until after a clinical evaluation or at minimum a detailed intake conversation.

Testimonials with no verifiable identity

Fabricated testimonials are now a documented pattern in this space. Generic names paired with stock headshots and no way to verify identity — no LinkedIn profile, no state license number, no verifiable clinic where the patient was treated. If a clinic's 'success stories' cannot be verified by any external means, assume they were written by the clinic.

What to do: Look for testimonials with full names, dates, condition details, and an outcome that mentions both what improved and what didn't. Unqualified praise with no specifics is a template.

No disclosure that these treatments are not FDA-approved

There is no FDA-approved stem cell product for any orthopedic indication in 2026. Providers operate under enforcement discretion, not regulatory approval — which means there is no mandatory evidence threshold, no standardized dosing, and no required outcome tracking. A clinic that presents these treatments as 'proven,' 'approved,' or implicitly equivalent to FDA-regulated medicine without disclosing their regulatory status is either uninformed or is deliberately omitting it.

What to do: Ask: 'Is this procedure FDA-approved?' A legitimate provider will give you an honest, nuanced answer. A provider who says 'yes' or sidesteps the question entirely is not being straight with you.

They have never heard of the MILES Trial — or dismiss it

The MILES Trial (Mautner et al., Nature Medicine, 2023) is the largest randomized controlled trial ever conducted on stem cell therapy for knee osteoarthritis. 480 patients. Result: no statistically significant advantage over corticosteroid injection at 12 months. Any provider doing this work professionally knows this study exists. If they don't know it, that is a training and awareness problem. If they dismiss it without specific counterargument, that is a credibility problem.

What to do: Ask: 'What is your response to the MILES Trial findings?' A serious clinician will have a nuanced, specific answer — usually about patient selection, protocol differences, or the limitations of the trial design.

Cure language, 'cartilage regrowth,' or guaranteed outcomes

No provider can guarantee outcomes. The biology is patient-specific, condition-specific, and protocol-specific. Clinics that use words like 'regrow cartilage,' 'reverse arthritis,' or imply that surgery avoidance is a certainty are making claims the evidence does not support. The honest framing — which the better providers use — is that most patients in the right candidacy window see meaningful improvement; some do not.

What to do: If a clinic's marketing sounds more certain than the published literature, the marketing is wrong. Certainty about biological outcomes is a sales technique, not a clinical position.

No mention of repeat treatment cost

Many providers recommend retreatment every 1–2 years, particularly for osteoarthritis. Patients who report the most painful regrets often describe spending $10,000 on an initial procedure, experiencing temporary relief, being told they need a repeat injection, and then facing the same out-of-pocket cost again — without ever having been warned this was the likely trajectory. If a clinic quotes you for one procedure without discussing what happens at year one or two, you're getting a fraction of the real financial picture.

What to do: Ask: 'Under what circumstances would you recommend a repeat treatment? What does that cost? Is there any protocol for patients who don't improve?'

The provider is a chiropractor, urgent care, or wellness clinic

Orthopedic regenerative medicine requires orthopedic patient selection — imaging review, candidacy assessment, procedural precision, and follow-up that makes clinical sense for a musculoskeletal condition. When stem cell injections are offered as an add-on at a chiropractic office, IV therapy lounge, anti-aging clinic, or general wellness practice, they are being administered outside the specialty context where the evidence was developed. The procedure may be physically identical. The clinical judgment around it is not.

What to do: Look for board-certified orthopedic surgeons, sports medicine physicians, or physiatrists with specific training in orthobiologics or interventional orthopedics.

What a good clinic looks like

The inverse of every flag above describes a legitimate provider. They review your imaging before making a recommendation. They use image-guided injection. They use your own cells. They disclose FDA status honestly. They know the MILES Trial and can speak to it. They don't promise outcomes. They give you a real cost picture including what retreatment looks like.

They also talk you out of treatment sometimes. That's what a good doctor does with a $7,000 elective procedure in a gray-zone regulatory category.

Also in this research guide

Is Stem Cell Therapy Worth It? →

The evidence for and against — including the MILES Trial — and who is and isn't a good candidate.

How Much Does Stem Cell Therapy Cost? →

Full 2026 price breakdown by procedure type, condition, and what drives the difference between a $4,000 and $12,000 treatment.

How We Verify Providers →

The criteria RegenSelect uses to verify every provider in the directory.

Find a verified provider

Every provider in the RegenSelect directory has been verified for an active orthopedic or sports medicine practice. No paid placements. No unverified listings.

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