Not All PRP Is Created Equal

Although PRP is widely used in orthopedic medicine, significant variability exists between PRP preparations, and these differences can affect clinical results.

Several factors determine the biological quality of PRP, including:

• Platelet concentration
• Leukocyte content
• Red blood cell contamination
• Centrifugation protocols
• Injection technique and targeting

A therapeutic PRP preparation should generally achieve at least a five-fold (≥5×) increase in platelet concentration compared with baseline blood levels. Preparations with lower platelet concentrations may not provide sufficient growth factor delivery to produce meaningful biological effects.

Additionally, excess red blood cells and leukocytes can increase inflammation and may negatively affect outcomes in certain applications, particularly intra-articular injections for osteoarthritis.

For these reasons, experienced orthobiologic clinics focus on:

• Standardized preparation protocols
• Validated centrifugation systems
• Image-guided injection techniques
• Appropriate PRP formulation selection for each condition

These factors play a critical role in delivering consistent, evidence-based orthobiologic treatments.