August 14, 2026 
16 min read
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Neuroscience & Brain Health
Why Preparation and Evidence Matter When Physicians Use PRP and PRF in Wound Care, Orthopedics, Dermatology, and Aesthetic Medicine
By Dr. William “Wes” Alden • Based on Nature Communications (Aug 2026) • 12 min read
Introduction
Dr. William “Wes” Alden, MD, PhD, is a physician-scientist whose career spans academic medicine, federal clinical research, community healthcare, and medical philanthropy. An internist and medical scientist currently associated with LCMC/Tulane Health in Louisiana, Dr. Alden has spent his professional life at the intersection of laboratory science and bedside care, a vantage point that has shaped one of his core convictions: regenerative therapies deserve both open-minded use and rigorous scientific scrutiny.
Few regenerative tools illustrate that balance better than platelet rich plasma (PRP) and platelet rich fibrin (PRF). Prepared from a patient’s own blood, these therapies have moved rapidly from sports medicine and oral surgery into wound care, orthopedics, dermatology, and aesthetics. For physician-scientists like Dr. Alden, that momentum is encouraging, but it raises the same essential question that applies across regenerative medicine: how do clinicians make sure a biologically elegant therapy is used where the evidence supports it, prepared correctly, and combined responsibly with other agents?
The answer, in his view, lies in understanding what PRP and PRF actually are, grading the evidence indication by indication, and respecting that preparation technique and regulatory status matter as much as enthusiasm.
Who Is William Alden, MD?
William Alden, MD, PhD, is an internist and medical scientist whose multidisciplinary background has allowed him to bridge the gap between scientific research and everyday patient care. Over the years, he has served in various capacities, including:
- Academic researcher and educator
- Biochemistry professor
- Physician involved in federal clinical trials
- Community-based healthcare provider
- Disaster response physician
- Medical mission medical director
- Non-profit healthcare leader
His career includes participation in federal clinical research initiatives and collaborative medical studies, with scholarly interests spanning internal medicine, biochemistry, translational science, integrative and functional medicine, clinical education, and community healthcare. That grounding in both molecular science and clinical investigation informs how he evaluates the tools of modern regenerative practice, including autologous biologics such as PRP and PRF.
What PRP and PRF Are, and How They Work
Both therapies begin with something ordinary: a small draw of the patient’s own blood, the same as any routine lab. That blood is spun in a centrifuge, which separates it by density and concentrates the platelets. Platelets are best known for stopping bleeding, but that is only part of their role. They are also reservoirs of growth factors, the signaling proteins that orchestrate tissue repair, and concentrating them allows a clinician to place that healing signal precisely where it is needed.
When platelets release their cargo, they deliver a coordinated mix of growth factors, each with a defined role in repair:
- Platelet derived growth factor and transforming growth factor beta. Recruit repair cells and stimulate fibroblasts to lay down new collagen.
- Vascular endothelial growth factor. Drives the formation of new blood vessels so healing tissue receives oxygen and nutrients.
- Epidermal and insulin like growth factors. Support cell proliferation and the rebuilding of surface and connective tissue.
The difference between the two preparations lies in how they are made. PRP, the first generation approach, is typically drawn with an anticoagulant so it remains liquid, then concentrated into a plasma that can be injected. It releases its growth factors relatively quickly. PRF, the second generation refinement, uses no anticoagulant, so the blood begins its natural clotting during the spin. The result is not a liquid but a soft fibrin matrix, a three dimensional scaffold that traps the platelets and white cells and releases their growth factors slowly over days. That scaffold gives new cells a structure to grow into and typically captures more white cells and repair signaling than standard PRP. In practice, PRP behaves like a concentrated injection, while PRF behaves more like a living, autologous scaffold prepared from the patient in the room.
Dr. Alden emphasizes a point that is easy to miss in the marketing: PRP and PRF do not replace tissue. They signal the body to rebuild and, in the case of PRF, supply a scaffold for that rebuilding. That distinction defines both their promise and their limits. They are best at accelerating a repair the body is capable of but performing slowly, and they are not a substitute for surgery when a structural repair is required.
The Rise of PRP and PRF in Modern Medicine
Because they use a patient’s own biology, carry an excellent safety profile, and can be prepared at the point of care, PRP and PRF have spread across a remarkable range of specialties. Four domains now dominate the conversation:
- Wound care. Concentrated autologous growth factors to restart stalled, hard to heal chronic wounds.
- Orthopedics. Treatment of osteoarthritis and chronic tendon injuries, the area with the deepest human evidence.
- Dermatology. Hair restoration, skin quality, and scar improvement, often paired with microneedling.
- Aesthetic medicine. Facial rejuvenation and natural volume support, increasingly using PRF for its scaffold and slow release.
Across all four, the newest frontier is combination, pairing PRP or PRF with hyaluronic acid or, carefully and lawfully, with peptides. Dr. Alden considers the differences among these uses, and among the levels of evidence behind them, to be exactly why clinical trial literacy matters as much in regenerative medicine as it does anywhere else.
The Clinical Applications of PRP and PRF
Acute/Chronic & Post Surgical Wound Care
Chronic wounds such as diabetic foot ulcers, venous leg ulcers, and pressure injuries are a logical application. These wounds stall in a prolonged inflammatory state, the wound bed is often poorly oxygenated, and the local growth factors that should drive repair are depleted or degraded by the wound’s own proteases. Likewise, post surgical would care and healing often have the same clinical features. Delivering a concentrated dose of the patient’s own growth factors, ideally in the sustained release form that PRF provides, addresses precisely what is missing. Dr. Alden regards the evidence here as moderate and growing, with several trials supporting improved closure of both surgical wounds and hard to heal wounds when PRP or PRF is added to good standard care. He views it as a valuable adjunct rather than a stand alone cure, most effective as part of a complete wound program that also manages oxygenation, offloading, infection, and nutrition.
Orthopedics
Orthopedics is where PRP first became widely known and where the human evidence is deepest. In major joint osteoarthritis, a substantial and growing body of trials supports PRP for pain and function, with several studies comparing it favorably to hyaluronic acid injections, particularly in earlier stage arthritis. In chronic tendon conditions such as tennis elbow, the data are also reasonably supportive. For other uses, including rotator cuff and Achilles or patellar tendon problems, results are more mixed and depend heavily on preparation and image guidance. Dr. Alden’s honest summary is that PRP/PRF is a legitimate option that can easily be used in combination with other agents such as hyaluronic acid, and peptides: especially for multiple joint arthropathy and certain tendinopathies.
Dermatology
Some of the most consistent dermatologic results appear in hair restoration. In androgenetic alopecia, the common pattern hair thinning affecting both men and women, PRP injected into the scalp has become one of the better supported regenerative treatments, with multiple studies showing improved hair density and thickness by stimulating follicles and their blood supply. Beyond hair, PRP and PRF are used for overall skin quality, for acne scarring, and for other scars, most often in combination with microneedling to prompt new collagen formation.
Aesthetic Medicine
Aesthetics adopted PRP enthusiastically, sometimes under memorable marketing names, but the serious version is real. Combined with microneedling, PRP can improve skin texture, fine lines, tone, and the appearance of scars. PRF has become especially popular in aesthetics because its fibrin scaffold and slower release suit facial rejuvenation, and because it can be used in delicate areas such as under the eyes and to support skin quality and natural volume in a fully autologous way. Dr. Alden notes that the aesthetic evidence is younger than the orthopedic evidence, that technique and realistic expectations matter as much as the material, and that the autologous safety profile is a genuine advantage.
Combining PRP and PRF with Hyaluronic Acid and Peptides
For Dr. Alden, the most interesting direction in this field is thoughtful combination. PRP and PRF are, at heart, a delivery vehicle and a signal, and pairing them with other complementary agents can address more of the healing process at once.
With Hyaluronic Acid: Hyaluronic acid is a molecule the body already makes in abundance. It holds water, lubricates joints, and forms much of the scaffolding that keeps skin hydrated and tissue supple. Pairing it with PRP or PRF is a natural fit because the two do different jobs: the platelet component supplies the biological signal to repair, while hyaluronic acid supplies hydration, lubrication, and a matrix for cells to move through. In knee osteoarthritis, combining PRP with hyaluronic acid has been studied as a way to obtain both biologic stimulation and mechanical cushioning in a single treatment, and several trials suggest the combination can outperform either agent alone in appropriate patients. In aesthetics, the pairing supplies immediate structure and hydration alongside a longer working effect on skin quality and collagen.
With Peptides: Peptides are the newest and most discussed layer, and it is where Dr. Alden urges the most caution, because the science and the regulation are moving quickly and are not always in step. Peptides are short chains of amino acids that act as precise signals. Some, such as the copper carrying tripeptide GHK-Cu, are well established in topical skincare for supporting collagen and skin renewal. Others studied for tissue repair signaling, along with mitochondrial peptides of interest for cellular energy, remain earlier on the evidence continuum. The logic of combining them with a platelet preparation is appealing, since the fibrin scaffold can hold and slowly release them while the platelets supply a broad repair signal.
The honest position, Dr. Alden stresses, is that for the injectable regenerative peptides the human evidence is still early and often preclinical, and the regulatory status is unsettled and actively changing. Several of these compounds are not approved drugs, and their availability for clinical use depends on evolving federal compounding rules. Responsible use is therefore only possible through a licensed provider, using appropriately sourced, pharmaceutical grade material, within the law as it stands at the time. Products labeled for research use only are never appropriate for use in people. He includes peptides in the discussion because they are a real and promising frontier, but he treats them as an area to approach carefully and lawfully, not as an off the shelf add on.
Why Evidence and Technique Must Anchor These Therapies
1. The Evidence Base Varies by Indication, and Physicians Must Know Where Each Use Stands
PRP and PRF are not one therapy with one evidence base. The support for PRP in osteoarthritis and hair restoration is far stronger than the support for some tendon or aesthetic uses, and the support for combining platelet preparations with investigational peptides is thinner still. Dr. Alden emphasizes that this does not make the less proven uses automatically inappropriate to discuss, but it obligates the physician to know exactly where each application sits, to communicate that honestly, and to set expectations accordingly. Registries such as ClinicalTrials.gov, maintained through the National Institutes of Health, let physicians see in real time what human studies exist and what remains unstudied.
2. Preparation and Technique Determine the Result
Unlike a standardized drug, PRP and PRF are prepared at the point of care, and the details change the product. Spin protocol and centrifugal force, whether the preparation is leukocyte rich or leukocyte poor, PRP versus PRF, the final platelet concentration, and the accuracy of placement all influence the outcome. Dr. Alden points out that much of the apparent inconsistency in the published literature reflects these differences in preparation and delivery rather than a failure of the underlying biology. Standardizing technique and using image guidance where appropriate are, in his view, part of practicing this medicine responsibly.
3. Evidence and Honest Counseling Protect Patients from Hype
The regenerative and aesthetic marketplace moves quickly, and commercial enthusiasm frequently outruns the data. Patients often arrive having seen dramatic testimonials rather than trials. Dr. Alden views the physician’s role as translational in the truest sense: converting the actual state of the science into plain language, distinguishing established benefit from plausible hypothesis, and protecting patients from paying for, or risking, more than the evidence supports.
4. Combinations Must Be Approached Carefully and Lawfully
Adding hyaluronic acid to a platelet preparation rests on reasonable evidence and a favorable safety profile. Adding investigational peptides raises separate questions of evidence, sourcing, and law. Dr. Alden treats any combination involving peptides as contingent on a compliant supply of pharmaceutical grade material, patient specific and lawful compounding, appropriate informed consent, and a clear understanding that research use only products have no place in patient care.
A Framework for Evidence-Based Use
Drawing on the principles that have defined his career, Dr. Alden’s approach suggests a practical framework for physicians offering PRP, PRF, and their combinations:
- Grade the evidence for every application. Know whether support comes from strong trials, small studies, or mechanism alone, and revisit that grading as new data appear.
- Match the preparation to the purpose. Choose PRP or PRF, and leukocyte rich or poor, deliberately for the tissue and goal at hand rather than by habit.
- Standardize technique. Consistent spin protocols, platelet dosing, and image guided placement reduce variability and improve results.
- Obtain genuinely informed consent. Patients considering less proven uses, or any peptide combination, deserve to understand exactly what is and is not known.
- Source and combine responsibly. Any added agent, especially a compounded peptide, must be lawful, appropriately sourced, and pharmaceutical grade, never a research use product.
- Monitor systematically. Structured follow up, photography, and outcome tracking bring trial-style discipline into everyday practice.
Contribute data where possible. Registries and collaborative studies let real-world practices strengthen the very evidence base they depend on.
Bridging Research and Patient Care
One of the defining characteristics of Dr. Alden’s career is his ability to integrate scientific research with compassionate patient care. Many physician-scientists spend their careers either in laboratories or in clinical practice; his professional journey demonstrates how both worlds can work together, and why that integration matters most at the frontier, where autologous biologics and their combinations live today. His work highlights several enduring principles:
- Evidence-based medicine. Using scientific evidence, graded honestly, to guide treatment decisions.
- Translational research. Applying laboratory insight to real-world patient care through structured, ethical study.
- Community engagement. Ensuring medical advances benefit patients broadly, not only those in specialized practices.
- Medical education. Training physicians to read the literature critically and practice with scientific humility.
Contributions Beyond Clinical Research
Beyond federal research involvement, Dr. Alden has also been recognized for international medical missions, disaster response efforts, non-profit healthcare leadership, community service initiatives, and mentorship. These contributions reflect a commitment not only to advancing science but to ensuring that its benefits reach patients, a value that applies as much to the responsible use of regenerative therapies as it does to global health.
Frequently Asked Questions
Both are prepared from a small draw of the patient’s own blood and concentrate platelets and their growth factors. PRP is usually processed with an anticoagulant, stays liquid, and releases its growth factors relatively quickly. PRF uses no anticoagulant, forms a soft fibrin scaffold, and releases its growth factors slowly over days while giving new cells a structure to grow into. PRF also tends to capture more white cells and repair signaling.
Because both use the patient’s own blood, the safety profile is excellent and allergic or rejection reactions are essentially not a concern. The most common effects are temporary soreness, swelling, or bruising at the treatment site. People with certain blood disorders, active infections, some cancers, or platelet conditions may not be candidates, which is why a proper clinical evaluation matters.
The deepest human evidence is in knee osteoarthritis and in hair restoration for pattern thinning, with reasonable support in chronic tendon conditions such as tennis elbow and a growing base in chronic wound care. Aesthetic uses are supported by a younger but developing body of evidence, and combinations with investigational peptides remain early and should be approached cautiously.
Yes, and combination is an active area of practice. Pairing with hyaluronic acid rests on reasonable evidence in joints and aesthetics. Pairing with peptides is promising but earlier in evidence and subject to evolving regulation, so it should only be done through a licensed provider using lawful, pharmaceutical grade material and never a research use only product.
Final Thoughts
PRP and PRF are a compelling illustration of regenerative medicine at its best: a patient’s own biology, concentrated and repositioned to accelerate healing, with an excellent safety profile and a widening range of uses across wound care, orthopedics, dermatology, and aesthetics. But promise is a starting point, not a destination. The difference between durable advances and passing enthusiasms is, and always has been, honest evidence, disciplined technique, and lawful practice.
William Alden, MD, PhD, represents the model of physician best suited to this moment: scientifically trained, clinically grounded, and committed to letting evidence lead. As regenerative medicine continues to evolve, physician-scientists like Dr. Alden will remain essential in ensuring that innovation ultimately serves patients safely and well.
This article is for general education and reflects Dr. Alden’s professional perspective. It is not medical advice and does not create a doctor patient relationship. Individual results vary, and not every therapy or combination discussed is FDA approved or appropriate for every person. Some agents mentioned, including certain peptides, have an evolving regulatory status and should be used only through a licensed provider in accordance with the law. Readers should consult a qualified healthcare professional about their own situation before pursuing any treatment.
