The short answer: Platelet-rich plasma (PRP) and exosome therapy are two regenerative medicine approaches with different mechanisms and different regulatory frameworks. PRP uses a patient’s own blood — spun in a centrifuge to concentrate platelets, then injected into the area being treated — and operates under the FDA’s framework for autologous, minimally manipulated tissue. Exosomes are signaling vesicles that have been studied for tissue regeneration; the FDA has not approved any exosome product for any use, and the FDA issued a public safety notification in December 2019 cautioning consumers about exosome products. At InfusaLounge in Allen, TX, PRP is offered for joint pain, tendon injuries, and aesthetic applications. Exosome therapy availability and use is determined case-by-case under the current regulatory framework, with all protocols reviewed by Phyllis J. Gee, MD, FACOG.
When your knee starts hurting in your 50s, the standard medical path tends to follow a predictable arc. NSAIDs first. Physical therapy. A cortisone shot when those stop working. Eventually, the orthopedic surgeon mentions joint replacement.
There’s a step we want patients to know exists before they get to the OR. Regenerative medicine — specifically PRP and exosome therapy — works through a different mechanism than the symptom-management tools most patients have already tried. Instead of suppressing inflammation or numbing the pain, these therapies deliver growth factors and cellular signaling that may support the tissue’s own repair processes.
It’s not a miracle. It’s not right for every case. And the regulatory landscape for the two therapies is different in important ways that every patient considering them should understand. This article walks through what PRP and exosome therapy actually are, how they’re regulated, who benefits most from each, and how to choose between them.
How These Therapies Are Regulated (Read This First)
Before we go further, the regulatory context matters. PRP and exosome therapy operate under different FDA frameworks, and conflating them has been a source of significant confusion in regenerative medicine over the past several years.
PRP uses your own blood, minimally manipulated (spun in a centrifuge to concentrate platelets), and re-injected into the same patient. This generally fits within the FDA’s framework for autologous, minimally manipulated tissue used in a homologous way, which is the safest regulatory category in regenerative medicine. PRP has decades of clinical use behind it and a well-established research base.
Exosomes are a different regulatory question. The FDA has not approved any exosome product for any clinical use. In December 2019, the FDA issued a public safety notification cautioning consumers and providers about exosome products being marketed for various conditions. The agency has issued warning letters to clinics selling exosome products in the years since, and the regulatory framework continues to evolve.
At InfusaLounge, when exosome therapy is considered, it’s evaluated case-by-case under the current regulatory framework, sourced from accredited laboratories, and reviewed by Dr. Gee before any protocol decision. We tell patients honestly that exosome research is promising but that the FDA has not approved exosome products as drugs or biologics, that claims for specific outcomes should be approached cautiously, and that what’s available through compliant pathways may change.
What PRP Actually Is
Platelet-rich plasma is exactly what it sounds like. A small amount of your blood is drawn, spun in a specialized centrifuge to concentrate the platelets, and the concentrated platelet solution is injected back into the area being treated. Because PRP uses your own blood, there’s no risk of rejection or transmissible disease from a donor source.
The therapeutic mechanism comes from the platelets themselves. They contain hundreds of growth factors — molecules that signal your tissues to repair and regenerate. When concentrated and delivered directly to an injury site, they support the natural healing process.
A 2021 systematic review in the American Journal of Sports Medicine reported that PRP for knee osteoarthritis produced outcomes comparable to or better than corticosteroid injections in several measures, without the tissue degradation risks associated with repeated steroid use.
What PRP Is Used For
The most common PRP applications at InfusaLounge include joint pain, tendon and ligament injuries, hair restoration, aesthetic medicine, and sexual health. Each application has its own evidence base and protocol.
Joint pain is the most common use. Knee osteoarthritis, shoulder issues, hip pain, and ankle problems all respond well to PRP in published research. Multiple studies have shown PRP can produce comparable or better outcomes than corticosteroid injections — with longer-lasting benefits and without the tissue degradation risks of repeated steroids.
Tendon and ligament injuries — tennis elbow, golfer’s elbow, rotator cuff issues, Achilles tendinopathy, patellar tendinopathy, plantar fasciitis — all have research support for PRP. The tissues being targeted have poor native blood supply, which is why they heal slowly without intervention. PRP provides growth factors that blood supply normally would.
Hair restoration uses PRP injected into the scalp to stimulate dormant hair follicles. Best evidence is in early-stage male and female pattern hair loss, particularly in patients still actively losing hair.
Aesthetic medicine uses PRP facials, sometimes called “vampire facials,” for skin quality, fine lines, and texture. Also used for under-eye hollows and skin rejuvenation.
Sexual health uses PRP injections for sexual function in both men and women.
What Exosomes Are
Exosomes are tiny vesicles — microscopic packages — released by cells that contain growth factors, signaling proteins, micro-RNA, and other molecules involved in cellular communication. Where PRP delivers concentrated growth factors directly, exosomes are studied for their role in directing cellular signaling.
A 2021 review in the International Journal of Molecular Sciences details mechanisms by which exosomes have been studied as facilitators of intercellular communication and tissue regeneration in research settings.
As noted in the regulatory section above, the FDA has not approved any exosome product. Exosome research has been promising in multiple areas, but the products themselves are not approved drugs or biologics, and any clinical use at InfusaLounge is determined case-by-case under the current regulatory framework.
What Exosomes Have Been Studied For
Exosomes have been studied in connection with several clinical applications, with varying levels of evidence behind each. The areas with the most research interest include systemic regenerative signaling delivered via IV, advanced joint conditions where PRP alone hasn’t been sufficient, hair restoration in patients with more advanced loss, and aesthetic applications often combined with microneedling or PRP.
It’s important to be honest about the current state of the evidence. Exosome research is genuinely active, with promising signals in multiple areas. But the published clinical evidence base is meaningfully smaller than for PRP, and the FDA has not approved any exosome product for any specific indication. Patients considering exosome therapy should approach it with appropriate expectations about both the potential and the current limits of what’s known.
PRP vs. Exosomes: How to Think About Choosing
For most patients with localized issues, PRP is the better-established starting point. The autologous framework, the longer research history, and the safety profile all favor PRP for joint, tendon and aesthetic applications.
For more advanced or complex cases, exosome therapy may be considered, but with full awareness of the regulatory framework and the more limited published clinical evidence base. The consultation is the right place to determine what’s appropriate for your specific situation.
Some patients are also good candidates for combined PRP and exosome protocols, again evaluated case-by-case. Triny will walk through the options at consultation.
What a PRP Treatment Looks Like
A typical PRP joint or tendon treatment takes 60 to 90 minutes total in the clinic. Most recovery soreness lasts 2 to 5 days, and real improvement typically begins around weeks 2 to 4.
The process starts with a consultation to confirm you’re a candidate and identify the target area precisely. Then a blood draw — about 30 to 60ml from your arm, similar to a standard lab draw. The blood is processed in the centrifuge for about 15 minutes to concentrate the platelets. The concentrated PRP is then injected directly into the joint, tendon, or area being treated. Ultrasound or precise anatomic guidance is used for joint injections. A brief post-injection check, and you’re on your way.
Most patients experience soreness for 2 to 5 days after the injection — this is the inflammatory response that drives the healing, and it’s expected. Real improvement typically begins around weeks 2 to 4 and continues to build through 8 to 12 weeks.
Most joint and tendon conditions benefit from a series of 2 to 3 PRP treatments spaced 4 to 6 weeks apart.
How Regenerative Therapies Stack With Other InfusaLounge Therapies
Whether PRP, exosomes, or both, regenerative work tends to be more effective when supported by the cellular conditions that make repair possible. Several InfusaLounge therapies pair naturally with regenerative protocols.
Regenerative plus peptide therapy: BPC-157 and TB-500 have been studied for connective tissue healing and are often used adjunctively during PRP recovery protocols. Subject to current regulatory availability for peptides.
Regenerative plus HBOT: Hyperbaric oxygen therapy in the OxyEdge chamber supports the cellular work that PRP initiates. Particularly useful for slow-healing injuries and post-surgical recovery.
Regenerative plus NAD+ IV: Cellular energy is required for the regenerative work to actually happen. See our NAD+ article for the bioavailability rationale.
Regenerative plus IV nutrient therapy: Amino acids, vitamin C for collagen synthesis, glutathione, and other nutrients support tissue repair at the substrate level.
Frequently Asked Questions
Is PRP painful?
The injection itself is comparable to a regular injection — brief discomfort. Joint injections can have more post-injection soreness for several days as the healing response activates. Local anesthetic is used for most injections.
How long until I see results?
PRP results typically begin around weeks 2 to 4 and build through 8 to 12 weeks. Some patients see continued improvement out to 6 months after a series.
How is exosome therapy regulated?
The FDA has not approved any exosome product. The FDA issued a public safety notification on exosome products in December 2019 and has issued warning letters to clinics in the years since. At InfusaLounge, exosome therapy is evaluated case-by-case under the current regulatory framework, sourced from accredited laboratories, and reviewed by Dr. Gee before any protocol decision. Availability and applications may change as the regulatory framework evolves.
Is regenerative medicine covered by insurance?
Generally no. Regenerative medicine is typically self-pay. HSA and FSA funds may apply.
Am I a candidate?
Most healthy adults are candidates for PRP. Certain conditions, including active cancer, certain blood disorders, active infections, and pregnancy, are contraindications. Exosome therapy candidacy is evaluated case-by-case as described above. Triny screens at consultation, and Dr. Gee reviews regenerative protocols.
How many PRP sessions will I need?
Most joint and tendon conditions benefit from a series of 2 to 3 PRP treatments spaced 4 to 6 weeks apart. Some patients have a single PRP treatment and see meaningful improvement.
Can I combine regenerative therapy with my regular orthopedic care?
Yes — many patients use PRP alongside conventional orthopedic care, physical therapy, and other treatments. We coordinate with your other providers as needed.
Ready to Explore Regenerative Medicine?
Regenerative medicine isn’t a quick fix, but for the right candidate it can be transformative. If you’ve been dealing with chronic joint pain, or slow-healing tendon injuries, a consultation is the right next step.
InfusaLounge Integrative & Functional Medicine
190 E Stacy Rd #1720, Allen, TX 75002
Call 972-546-4318 or book a regenerative consultation
Serving Allen, McKinney, Frisco, Plano, and surrounding North Dallas communities.
About the Authors
Medically reviewed by Phyllis J. Gee, MD, FACOG. Dr. Phyllis J. Gee is Medical Director of InfusaLounge Integrative & Functional Medicine. A board-certified OB/GYN and Fellow of the American College of Obstetricians and Gynecologists, she completed her Bachelor of Science in Nutrition at Cornell University, her MD at Wayne State University School of Medicine, and her residency in Obstetrics and Gynecology at Albert Einstein College of Medicine. She is an ADAPT-trained Functional Medicine practitioner (Kresser Institute) with more than 30 years of clinical experience. Dr. Gee’s research on transcervical fibroid ablation has been published in the International Journal of Gynecology and Obstetrics, and she served as a site investigator in the FDA-reviewed SONATA Pivotal IDE clinical trial. She has been cited in The New York Times. NPI 1417953241 · Texas Medical License H1583. View full bio →
Written by Melissa Chester, BBA. Founder and Director of Operations, InfusaLounge Integrative & Functional Medicine. Healthcare operations leader who built InfusaLounge from the ground up in 2018, with direct operational oversight of every clinical program. View full bio →
